Gr 10 Physical Sciences Term 3

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Questions and Answers

What are the two characteristics that define a vector?

  • Magnitude and direction (correct)
  • Mass and velocity
  • Length and width
  • Force and acceleration

When are two vectors considered equal?

  • When they have the same magnitude but different directions
  • When they have different magnitudes but the same direction
  • When they are both negative vectors
  • When they have the same magnitude and direction (correct)

What does a negative sign indicate in a vector?

  • A vector with a small magnitude
  • A vector with no direction
  • A vector with the opposite direction (correct)
  • A vector with a large magnitude

What is the result of adding two vectors together?

<p>A vector with a magnitude and direction that depends on the individual vectors (C)</p> Signup and view all the answers

Why is it important to consider both magnitude and direction when adding vectors?

<p>Because both the magnitude and direction affect the result (D)</p> Signup and view all the answers

What can be used to illustrate vector addition graphically?

<p>Displacement vectors (C)</p> Signup and view all the answers

What is the concept of equality of vectors used for in real-world applications?

<p>To determine if two forces are acting in the same way (D)</p> Signup and view all the answers

How do you subtract one vector from another?

<p>By adding the negative of the second vector to the first (A)</p> Signup and view all the answers

What is the unit of acceleration in the context of motion with constant acceleration?

<p>m/s^2 (A)</p> Signup and view all the answers

Which of the following variables represents the final velocity in the equations of motion?

<p>v_f (B)</p> Signup and view all the answers

What is the purpose of the four equations of motion?

<p>To analyze motion with constant acceleration (A)</p> Signup and view all the answers

What is the definition of gravitational potential energy?

<p>The energy an object has due to its position or state (A)</p> Signup and view all the answers

What is the unit of gravitational potential energy?

<p>Joule (C)</p> Signup and view all the answers

Which equation of motion relates the initial velocity, final velocity, and acceleration?

<p>v_f = v_i + at (A)</p> Signup and view all the answers

What is the minimum number of known quantities required to solve a problem involving motion with constant acceleration?

<p>3 (A)</p> Signup and view all the answers

What is the purpose of the problem-solving strategy in motion with constant acceleration?

<p>To select the appropriate equation of motion (A)</p> Signup and view all the answers

What is the symbol used to denote gravitational potential energy?

<p>E_p (B)</p> Signup and view all the answers

In which context is gravitational potential energy the energy an object possesses due to its height above the Earth's surface?

<p>In the context of the Earth (A)</p> Signup and view all the answers

What is the main difference between distance and displacement?

<p>Distance measures the total path length, while displacement measures the net change in position. (C)</p> Signup and view all the answers

Why is it essential to establish a clear frame of reference in analyzing motion?

<p>To accurately describe the position of an object and any changes in that position. (B)</p> Signup and view all the answers

What is the primary purpose of understanding vector addition?

<p>To solve problems involving multiple vector quantities (A)</p> Signup and view all the answers

What is the first step in the head-to-tail method of vector addition?

<p>Draw a rough sketch of the situation (D)</p> Signup and view all the answers

What is the unit of average speed and average velocity?

<p>Meter per second (C)</p> Signup and view all the answers

What is the purpose of defining a reference direction in the head-to-tail method?

<p>To define the direction of the first vector (A)</p> Signup and view all the answers

What does average speed measure?

<p>The total distance traveled by an object. (B)</p> Signup and view all the answers

What is the difference between average speed and average velocity?

<p>Average speed is a scalar quantity, while average velocity is a vector quantity. (B)</p> Signup and view all the answers

What type of vectors are algebraic techniques useful for?

<p>Collinear vectors (C)</p> Signup and view all the answers

What is the formula for calculating average speed?

<p>v_avg = D / Δt (B)</p> Signup and view all the answers

What is the primary purpose of a reference frame?

<p>To provide a context for understanding an object's position and movement (D)</p> Signup and view all the answers

What is the significance of the direction of motion in velocity?

<p>It determines the direction of velocity. (B)</p> Signup and view all the answers

What is the minimum number of directions required in a frame of reference?

<p>One (A)</p> Signup and view all the answers

What is the purpose of choosing a reference point in a frame of reference?

<p>To provide a context for describing positions and movements (C)</p> Signup and view all the answers

What is the difference between speed and velocity in terms of dependence on path?

<p>Velocity depends on the path taken, while speed does not. (C)</p> Signup and view all the answers

What is the result of adding or subtracting magnitudes in algebraic techniques?

<p>The sign of the sum (C)</p> Signup and view all the answers

What can be said about the sign of velocity?

<p>It can be positive or negative depending on the direction of motion. (B)</p> Signup and view all the answers

What is the benefit of using a reference frame?

<p>It provides a context for understanding an object's position and movement (D)</p> Signup and view all the answers

What happens to the speed of an object during a round trip?

<p>It is non-zero because the total distance traveled is positive. (D)</p> Signup and view all the answers

What is the velocity of an object for a round trip?

<p>Zero (B)</p> Signup and view all the answers

What is the relationship between the reference point and the coordinate system in a frame of reference?

<p>The reference point is the origin of the coordinate system (A)</p> Signup and view all the answers

What is the difference between distance and displacement?

<p>Distance is the total length of the path, whereas displacement is the straight-line distance (A)</p> Signup and view all the answers

What is the unit of average acceleration?

<p>Metre per second squared (m·s⁻²) (D)</p> Signup and view all the answers

What is the formula for average acceleration?

<p>a = Δv / Δt (D)</p> Signup and view all the answers

What does acceleration indicate?

<p>How the velocity of an object changes with time (A)</p> Signup and view all the answers

What is the nature of acceleration?

<p>Vector quantity (D)</p> Signup and view all the answers

What is the boy's perspective on his motion when he is on a moving train?

<p>He is not moving relative to the train. (C)</p> Signup and view all the answers

What happens when velocity is positive and acceleration is negative?

<p>The object slows down (D)</p> Signup and view all the answers

What is the definition of instantaneous velocity?

<p>The velocity of an object at a specific instant in time (D)</p> Signup and view all the answers

What defines the frame of reference in motion?

<p>The reference point and direction. (C)</p> Signup and view all the answers

In one-dimensional motion, what is the direction of position relative to the origin?

<p>Either positive or negative. (C)</p> Signup and view all the answers

What is the formula for instantaneous velocity?

<p>v = lim(Δt → 0) Δx / Δt (D)</p> Signup and view all the answers

What is the unit of position?

<p>Meters. (A)</p> Signup and view all the answers

What is the difference between instantaneous velocity and average velocity?

<p>Instantaneous velocity is the velocity at a specific instant, while average velocity is the velocity over a time interval (A)</p> Signup and view all the answers

What is the difference between distance and displacement?

<p>Distance is a scalar quantity, while displacement is a vector quantity. (D)</p> Signup and view all the answers

What is the formula for displacement?

<p>Δx = xf - xi (C)</p> Signup and view all the answers

What is the primary difference between distance and displacement in terms of path?

<p>Distance depends on the path, while displacement is independent of the path. (A)</p> Signup and view all the answers

What is the sign of distance?

<p>Always positive. (D)</p> Signup and view all the answers

What is the type of quantity that distance is?

<p>Scalar quantity. (A)</p> Signup and view all the answers

What is the direction of displacement relative to the chosen frame of reference?

<p>Either positive or negative. (A)</p> Signup and view all the answers

What is the result of adding two steps forward and three steps forward?

<p>Five steps forward (C)</p> Signup and view all the answers

What is the result of subtracting three steps forward from five steps forward?

<p>Two steps forward (B)</p> Signup and view all the answers

What is the resultant vector of two vectors acting in the same direction?

<p>The sum of the two vectors (C)</p> Signup and view all the answers

What is the definition of an equilibrant vector?

<p>A vector with the same magnitude but opposite direction to the resultant vector (D)</p> Signup and view all the answers

What is the purpose of the head-to-tail method in vector addition?

<p>To add vectors graphically (B)</p> Signup and view all the answers

What is the result of adding a vector and its equilibrant?

<p>Zero (D)</p> Signup and view all the answers

What is the difference between vector addition and subtraction?

<p>Vector addition is for vectors in the same direction, while subtraction is for vectors in opposite directions (B)</p> Signup and view all the answers

What is the result of adding two vectors of equal magnitude but opposite direction?

<p>Zero (A)</p> Signup and view all the answers

What is the graphical technique used to add vectors?

<p>The head-to-tail method (C)</p> Signup and view all the answers

What is the purpose of choosing a scale when drawing vectors graphically?

<p>To accurately represent the magnitude of the vectors (A)</p> Signup and view all the answers

What is the characteristic of motion at constant velocity?

<p>Object's position changes at a steady rate over time (D)</p> Signup and view all the answers

What does the position-time graph indicate in uniform motion?

<p>A steady rate of change in position (B)</p> Signup and view all the answers

What is the shape of the position-time graph in motion with constant acceleration?

<p>A parabolic curve (B)</p> Signup and view all the answers

What is the magnitude of the instantaneous velocity?

<p>Instantaneous speed (A)</p> Signup and view all the answers

What does the velocity-time graph indicate in motion with constant acceleration?

<p>A linear change in velocity (A)</p> Signup and view all the answers

How is velocity determined from an acceleration-time graph?

<p>By calculating the area under the graph (D)</p> Signup and view all the answers

What unit is used to measure instantaneous speed?

<p>Meter per second (m/s) (C)</p> Signup and view all the answers

What is the difference between instantaneous velocity and instantaneous speed?

<p>Instantaneous velocity is vector, but instantaneous speed is scalar (B)</p> Signup and view all the answers

What is the characteristic of a stationary object?

<p>Constant position (D)</p> Signup and view all the answers

What is the purpose of the velocity-time graph in uniform motion?

<p>To indicate the object's constant velocity (A)</p> Signup and view all the answers

What is the purpose of distinguishing between an instant in time and a time interval?

<p>To analyze the motion of an object accurately (D)</p> Signup and view all the answers

What does the acceleration-time graph indicate in motion with constant acceleration?

<p>A constant acceleration (B)</p> Signup and view all the answers

What is the main difference between describing motion using words and diagrams?

<p>Words provide a narrative, while diagrams provide a visual representation (C)</p> Signup and view all the answers

What type of motion has a constant position, velocity, and acceleration?

<p>Stationary object (A)</p> Signup and view all the answers

What is the relationship between the position-time, velocity-time, and acceleration-time graphs?

<p>They provide a comprehensive understanding of motion (D)</p> Signup and view all the answers

What type of graph would be used to represent the motion of a stationary object?

<p>Horizontal lines in all three graphs (D)</p> Signup and view all the answers

What is the third method for describing motion?

<p>Using mathematical equations (D)</p> Signup and view all the answers

What is the primary application of understanding instantaneous velocity and speed?

<p>Designing better control systems in automotive engineering (D)</p> Signup and view all the answers

What is the main advantage of using graphs to describe motion?

<p>They provide a visual representation of motion (A)</p> Signup and view all the answers

What is the primary difference between uniform motion and motion with constant acceleration?

<p>Uniform motion has a constant velocity, while motion with constant acceleration has a changing velocity (D)</p> Signup and view all the answers

What is the unit of measurement for gravitational potential energy?

<p>Joule (C)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it falls?

<p>It decreases (C)</p> Signup and view all the answers

What is the formula to calculate kinetic energy?

<p>E_K = 1/2 mv^2 (D)</p> Signup and view all the answers

What is the energy an object has due to its motion?

<p>Kinetic energy (D)</p> Signup and view all the answers

What are the two factors that affect kinetic energy?

<p>Mass and velocity (A)</p> Signup and view all the answers

What happens to the kinetic energy of an object as its velocity increases?

<p>It increases (A)</p> Signup and view all the answers

What is the relationship between potential and kinetic energy in the context of gravitational potential energy?

<p>One increases as the other decreases (C)</p> Signup and view all the answers

What is the unit of measurement for velocity in the formula for kinetic energy?

<p>Meter per second (D)</p> Signup and view all the answers

What is the term for the energy an object has due to its position or state?

<p>Potential energy (D)</p> Signup and view all the answers

What happens to the kinetic energy of an object when it reaches the reference point (ground level)?

<p>It becomes zero (A)</p> Signup and view all the answers

What is the condition for two vectors to be considered equal?

<p>They have the same magnitude and direction (A)</p> Signup and view all the answers

What does a negative vector represent?

<p>A vector with the opposite direction to the reference positive direction (C)</p> Signup and view all the answers

What is the result of adding two vectors with the same direction?

<p>A vector with a magnitude equal to the sum of the two vectors (A)</p> Signup and view all the answers

What is the purpose of graphical representation of vector addition?

<p>To illustrate the concept of vector addition (B)</p> Signup and view all the answers

What is a characteristic of vectors that makes them different from scalars?

<p>They have both magnitude and direction (A)</p> Signup and view all the answers

What is the result of adding two vectors with opposite directions?

<p>A vector with a magnitude equal to the difference of the two vectors (B)</p> Signup and view all the answers

What is the importance of considering both magnitude and direction when adding vectors?

<p>It is important for calculating both the magnitude and direction of the resulting vector (B)</p> Signup and view all the answers

What is the concept of negative vectors used to represent?

<p>Forces in the opposite direction to the reference positive direction (D)</p> Signup and view all the answers

What is the primary purpose of understanding vector addition techniques in physics?

<p>To solve problems involving multiple vector quantities (A)</p> Signup and view all the answers

What is the advantage of using algebraic techniques for vector addition?

<p>They are useful for collinear vectors (D)</p> Signup and view all the answers

What is the purpose of choosing a reference direction in the head-to-tail method of vector addition?

<p>To define the positive direction (C)</p> Signup and view all the answers

What is the role of the origin in a frame of reference?

<p>It is the point of reference (B)</p> Signup and view all the answers

What is the benefit of using a reference frame in physics?

<p>It provides a context for describing positions and movements (B)</p> Signup and view all the answers

What is the result of adding or subtracting magnitudes in algebraic techniques of vector addition?

<p>The direction of the resultant vector is based on the sign of the sum (B)</p> Signup and view all the answers

What is the minimum number of directions required in a frame of reference?

<p>One (B)</p> Signup and view all the answers

What is the purpose of defining a reference point in a frame of reference?

<p>To provide a context for describing positions and movements (B)</p> Signup and view all the answers

What is the difference between the head-to-tail method and algebraic techniques of vector addition?

<p>The head-to-tail method is used for graphical representations, while algebraic techniques are used for numerical calculations (D)</p> Signup and view all the answers

What is the significance of establishing a clear frame of reference in analyzing motion?

<p>It provides a context for describing positions and movements (D)</p> Signup and view all the answers

What is the fundamental difference between distance and displacement?

<p>Distance is a scalar, while displacement is a vector (C)</p> Signup and view all the answers

What defines the frame of reference in motion?

<p>The reference point and the direction (C)</p> Signup and view all the answers

What is the significance of a negative position value in a one-dimensional coordinate system?

<p>The object is to the left of the origin (C)</p> Signup and view all the answers

What is the purpose of defining a frame of reference in motion?

<p>To establish a clear perspective on the object's motion (B)</p> Signup and view all the answers

What is the formula for calculating displacement in one-dimensional motion?

<p>Δx = xf - xi (B)</p> Signup and view all the answers

What is the primary difference between a one-dimensional coordinate system and a two-dimensional coordinate system?

<p>The number of axes used to define position (D)</p> Signup and view all the answers

What is the significance of the sign of the displacement in one-dimensional motion?

<p>It indicates the direction of the displacement (A)</p> Signup and view all the answers

What is the primary purpose of describing motion in terms of displacement and distance?

<p>To analyze the object's motion in a specific frame of reference (C)</p> Signup and view all the answers

What is the relationship between the position and displacement of an object in one-dimensional motion?

<p>Position and displacement are related but distinct concepts (B)</p> Signup and view all the answers

What is the benefit of using a frame of reference in motion?

<p>It provides a clear and consistent perspective on the object's motion (C)</p> Signup and view all the answers

What is the purpose of adding a vector with its direction reversed?

<p>To subtract a vector from another (C)</p> Signup and view all the answers

What is the resultant vector?

<p>The single vector that has the same effect as the combination of the individual vectors (C)</p> Signup and view all the answers

What is the significance of the head-to-tail method in graphical techniques?

<p>It is used to find the resultant vector (C)</p> Signup and view all the answers

What happens when the equilibrant and the resultant vectors are added together?

<p>The resultant vector becomes zero (D)</p> Signup and view all the answers

What is the purpose of the head-to-tail method in graphical techniques?

<p>To draw accurate scale diagrams to denote individual vectors and their resultants (C)</p> Signup and view all the answers

What is the definition of the equilibrant vector?

<p>The vector that has the same magnitude but opposite direction to the resultant vector (A)</p> Signup and view all the answers

What is the significance of the resultant vector in vector addition?

<p>It is the single vector that has the same effect as the combination of the individual vectors (B)</p> Signup and view all the answers

What is the purpose of graphical techniques in vector addition?

<p>To visualize the addition of vectors graphically (C)</p> Signup and view all the answers

What is the significance of the order of addition in vector addition?

<p>The order of addition does not affect the resultant vector (B)</p> Signup and view all the answers

What is the purpose of adding or subtracting vectors in vector addition?

<p>To find the resultant vector (B)</p> Signup and view all the answers

What is the primary reason for distinguishing between distance and displacement?

<p>To understand the direction of an object's motion (A)</p> Signup and view all the answers

What is the main advantage of using a consistent frame of reference when analyzing motion?

<p>It provides a clear description of motion (C)</p> Signup and view all the answers

What is the characteristic of average velocity that distinguishes it from average speed?

<p>It is a vector quantity (C)</p> Signup and view all the answers

What is the difference between average speed and average velocity in terms of direction?

<p>Average speed does not have direction, while average velocity does (C)</p> Signup and view all the answers

What is the purpose of defining a reference direction in the context of motion?

<p>To establish a consistent frame of reference (B)</p> Signup and view all the answers

What is the significance of the initial and final positions in calculating average velocity?

<p>They are used to calculate the change in position (A)</p> Signup and view all the answers

Why is it essential to consider both magnitude and direction when analyzing motion?

<p>Because magnitude and direction are related to each other (D)</p> Signup and view all the answers

What is the difference between speed and velocity in a round trip?

<p>Speed is non-zero, while velocity is zero (D)</p> Signup and view all the answers

What is the purpose of calculating average speed and average velocity?

<p>To analyze the motion of an object (C)</p> Signup and view all the answers

What is the benefit of using a consistent frame of reference in analyzing motion?

<p>It provides a clear description of motion (B)</p> Signup and view all the answers

What is the primary difference between instantaneous velocity and instantaneous speed?

<p>Instantaneous velocity has magnitude and direction, while instantaneous speed only has magnitude. (A)</p> Signup and view all the answers

What is the purpose of distinguishing between an instant in time and a time interval?

<p>To analyze the motion of an object at a specific moment (D)</p> Signup and view all the answers

What is the benefit of using diagrams to describe motion?

<p>They help in visualizing the trajectory and interactions in motion (A)</p> Signup and view all the answers

What is the characteristic of a stationary object?

<p>It remains in the same position over time (B)</p> Signup and view all the answers

What is the purpose of understanding instantaneous velocity and speed?

<p>To design better control systems and safety mechanisms in automotive engineering (B)</p> Signup and view all the answers

What is the unit of instantaneous speed?

<p>Metre per second (ms^(-1)) (B)</p> Signup and view all the answers

What is the formula for instantaneous speed?

<p>v = |\vec{v}| (B)</p> Signup and view all the answers

What is the main difference between describing motion using words and using diagrams?

<p>Words provide a narrative of motion scenarios, while diagrams help in visualizing the trajectory and interactions in motion (C)</p> Signup and view all the answers

What is the significance of understanding the different types of motion?

<p>It helps in analyzing different motion scenarios effectively (C)</p> Signup and view all the answers

What is the primary purpose of graphs in describing motion?

<p>To provide a clear, quantitative picture of how motion parameters change over time (D)</p> Signup and view all the answers

What is the characteristic of an object's motion when its position changes at a steady rate over time?

<p>It has zero acceleration (A)</p> Signup and view all the answers

What does the slope of a velocity-time graph represent in motion with constant acceleration?

<p>The acceleration of the object (B)</p> Signup and view all the answers

What is the shape of a position-time graph in motion with constant acceleration?

<p>A parabolic curve (B)</p> Signup and view all the answers

What is the purpose of the velocity-time graph in motion with constant acceleration?

<p>To calculate the displacement of the object (C)</p> Signup and view all the answers

What is the relationship between the acceleration-time graph and the velocity of an object in motion with constant acceleration?

<p>The acceleration-time graph determines the velocity (C)</p> Signup and view all the answers

What is the significance of the area under the velocity-time graph in motion with constant acceleration?

<p>It represents the displacement of the object (A)</p> Signup and view all the answers

What is the shape of the position-time graph in uniform motion?

<p>A straight line (D)</p> Signup and view all the answers

What is the characteristic of an object's motion when it is at rest?

<p>It has zero acceleration (A)</p> Signup and view all the answers

What is the purpose of the acceleration-time graph in motion with constant acceleration?

<p>To find the acceleration of the object (B)</p> Signup and view all the answers

What is the relationship between the velocity-time graph and the acceleration of an object in motion with constant acceleration?

<p>The velocity-time graph determines the acceleration (D)</p> Signup and view all the answers

What is the unit of acceleration in the context of motion with constant acceleration?

<p>m/s^2 (C)</p> Signup and view all the answers

Which equation of motion relates the initial velocity, final velocity, and acceleration?

<p>First Equation of Motion (B)</p> Signup and view all the answers

What is the primary difference between speed and velocity?

<p>Speed is a scalar quantity, while velocity is a vector quantity. (C)</p> Signup and view all the answers

What is the minimum number of known quantities required to solve a problem involving motion with constant acceleration?

<p>3 (A)</p> Signup and view all the answers

What is the unit of acceleration?

<p>Metre per second squared (m·s⁻²) (B)</p> Signup and view all the answers

What does acceleration indicate?

<p>The change in velocity over time. (A)</p> Signup and view all the answers

What is the purpose of the problem-solving strategy in motion with constant acceleration?

<p>All of the above (D)</p> Signup and view all the answers

What is the nature of acceleration?

<p>A vector quantity with both magnitude and direction. (B)</p> Signup and view all the answers

What is the symbol used to denote gravitational potential energy?

<p>E_p (D)</p> Signup and view all the answers

In which context is gravitational potential energy the energy an object possesses due to its height above the Earth's surface?

<p>In the context of the Earth's gravitational field (C)</p> Signup and view all the answers

What happens when velocity is positive and acceleration is negative?

<p>The object is slowing down. (C)</p> Signup and view all the answers

What is the definition of gravitational potential energy?

<p>The energy an object has due to its position or state (B)</p> Signup and view all the answers

What is the definition of instantaneous velocity?

<p>The velocity of an object at a specific instant in time. (A)</p> Signup and view all the answers

What is the formula for instantaneous velocity?

<p>v = lim (Δx / Δt) as Δt → 0 (A)</p> Signup and view all the answers

What is the unit of gravitational potential energy?

<p>Joule (D)</p> Signup and view all the answers

What is the purpose of understanding the concept of acceleration?

<p>To analyze motion and understand how velocity changes over time. (C)</p> Signup and view all the answers

Which equation of motion relates the displacement, initial velocity, and acceleration?

<p>Third Equation of Motion (C)</p> Signup and view all the answers

What is the difference between average acceleration and instantaneous acceleration?

<p>Average acceleration is the change in velocity over a specific time interval, while instantaneous acceleration is the acceleration at a specific instant in time. (C)</p> Signup and view all the answers

What is the purpose of using the four equations of motion?

<p>To solve problems involving motion with constant acceleration (A)</p> Signup and view all the answers

What is the significance of the direction of motion in velocity?

<p>It determines the velocity of the object, as velocity is a vector quantity with both magnitude and direction. (B)</p> Signup and view all the answers

What is the unit of gravitational potential energy?

<p>Joules (J) (B)</p> Signup and view all the answers

What is the formula for kinetic energy?

<p>E_K = 1/2 mv^2 (C)</p> Signup and view all the answers

What happens to an object's gravitational potential energy as it falls from a height?

<p>It decreases (B)</p> Signup and view all the answers

What is the primary factor that affects the kinetic energy of an object?

<p>Both mass and velocity (B)</p> Signup and view all the answers

What is the energy an object possesses due to its motion?

<p>Kinetic energy (C)</p> Signup and view all the answers

What is the relationship between an object's gravitational potential energy and its height?

<p>The energy increases as the height increases (B)</p> Signup and view all the answers

What is the conversion of energy that occurs when an object falls from a height?

<p>Potential energy to kinetic energy (A)</p> Signup and view all the answers

What is the purpose of the formula for kinetic energy?

<p>To calculate the kinetic energy of an object (D)</p> Signup and view all the answers

What is the unit of acceleration in the context of gravitational potential energy?

<p>Meters per second squared (m/s²) (B)</p> Signup and view all the answers

What is the significance of the height of an object in calculating its gravitational potential energy?

<p>It is used to calculate the gravitational potential energy of the object (B)</p> Signup and view all the answers

What is the key characteristic of a negative vector?

<p>It has a direction opposite to the reference positive direction (D)</p> Signup and view all the answers

When adding two vectors, what must be considered?

<p>Both the magnitude and direction (B)</p> Signup and view all the answers

What is the result of adding two vectors that are equal in magnitude but opposite in direction?

<p>A vector with zero magnitude (B)</p> Signup and view all the answers

What can be used to illustrate the addition of displacement vectors?

<p>Graphical representation (C)</p> Signup and view all the answers

What is the condition for two vectors to be equal?

<p>They have the same magnitude and direction (D)</p> Signup and view all the answers

What is the purpose of defining a reference direction?

<p>To compare the directions of two vectors (A)</p> Signup and view all the answers

What is the result of subtracting a vector from itself?

<p>A vector with a magnitude equal to zero (C)</p> Signup and view all the answers

What can be added or subtracted using the methods of vector addition?

<p>Any type of vectors (D)</p> Signup and view all the answers

What is the effect of adding a vector with its direction reversed?

<p>It results in the subtraction of the vector (B)</p> Signup and view all the answers

What is the resultant vector?

<p>The single vector that has the same effect as the combination of the individual vectors (B)</p> Signup and view all the answers

What is the technique used to visualize the subtraction of vectors?

<p>Graphical technique (B)</p> Signup and view all the answers

What is the definition of the equilibrant vector?

<p>The vector which has the same magnitude but opposite direction to the resultant vector (C)</p> Signup and view all the answers

What is the purpose of the head-to-tail method?

<p>To add vectors graphically (B)</p> Signup and view all the answers

What happens when the equilibrant and the resultant vectors are added together?

<p>The result is zero (B)</p> Signup and view all the answers

What is the significance of the order of addition in vector addition?

<p>The order of addition does not affect the result (D)</p> Signup and view all the answers

What is the result of moving five steps forward and then three steps backward?

<p>Two steps forward (D)</p> Signup and view all the answers

What is the graphical representation of the resultant vector?

<p>The vector drawn from the tail of the first vector to the head of the last vector (A)</p> Signup and view all the answers

What is the purpose of defining a reference direction in the head-to-tail method?

<p>To determine the direction of the vectors (B)</p> Signup and view all the answers

In a one-dimensional coordinate system, what determines the direction of an object's position relative to the origin?

<p>The sign of the position value (C)</p> Signup and view all the answers

What is the primary difference between distance and displacement?

<p>Distance depends on the path taken, while displacement is independent of the path (C)</p> Signup and view all the answers

What is the significance of the frame of reference in analyzing motion?

<p>It provides a fixed point of reference for measuring motion (D)</p> Signup and view all the answers

What is the unit of position in a one-dimensional coordinate system?

<p>Meters (A)</p> Signup and view all the answers

What is the formula for calculating displacement?

<p>Δx = xf - xi (B)</p> Signup and view all the answers

Why is displacement a vector quantity?

<p>Because it has both magnitude and direction (B)</p> Signup and view all the answers

What is the significance of the sign of the displacement value?

<p>It indicates the direction of motion (C)</p> Signup and view all the answers

What is the primary purpose of understanding displacement and distance?

<p>To describe and analyze the movement of objects within a defined frame of reference (C)</p> Signup and view all the answers

What is the difference between the boy's perspective and the perspective of someone standing on the platform?

<p>The boy sees himself standing still, while the person on the platform sees the train moving (D)</p> Signup and view all the answers

What is the significance of establishing a clear frame of reference in analyzing motion?

<p>It provides a fixed point of reference for measuring motion (A)</p> Signup and view all the answers

What is the total length of the path traveled by an object, regardless of direction?

<p>Distance (B)</p> Signup and view all the answers

What is the straight-line distance from the starting point to the endpoint, taking direction into account?

<p>Displacement (A)</p> Signup and view all the answers

What is the unit of average acceleration?

<p>Metre per second squared (m·s⁻²) (D)</p> Signup and view all the answers

What does acceleration indicate?

<p>How quickly an object's velocity changes over time (A)</p> Signup and view all the answers

What is the nature of acceleration?

<p>Vector quantity (A)</p> Signup and view all the answers

What happens when velocity is positive and acceleration is positive?

<p>The object speeds up (C)</p> Signup and view all the answers

What is the definition of instantaneous velocity?

<p>The velocity of an object at a specific instant in time (C)</p> Signup and view all the answers

What is the formula for calculating average acceleration?

<p>a = Δv / Δt (C)</p> Signup and view all the answers

What happens when velocity is negative and acceleration is positive?

<p>The object slows down (A)</p> Signup and view all the answers

What does the magnitude of acceleration represent?

<p>The change in velocity of an object over time (B)</p> Signup and view all the answers

What is the primary purpose of understanding vector addition?

<p>To solve problems involving multiple vector quantities (A)</p> Signup and view all the answers

What is the benefit of using algebraic techniques in vector addition?

<p>They are useful for adding collinear vectors (D)</p> Signup and view all the answers

What is the purpose of choosing a reference direction in the head-to-tail method?

<p>To determine the direction of the resultant vector (C)</p> Signup and view all the answers

What is the primary purpose of a reference frame in motion?

<p>To provide a context for describing positions and movements (D)</p> Signup and view all the answers

What is the result of adding or subtracting magnitudes in algebraic techniques?

<p>The magnitude of the resultant vector is determined (C)</p> Signup and view all the answers

What is the minimum number of directions required in a frame of reference?

<p>One (A)</p> Signup and view all the answers

What is the purpose of defining a reference point in a frame of reference?

<p>To specify the origin of the coordinate system (A)</p> Signup and view all the answers

What is the difference between a reference frame and a coordinate system?

<p>A reference frame is a coordinate system with a reference point (B)</p> Signup and view all the answers

What is the significance of the direction of motion in velocity?

<p>It determines the direction of the velocity (C)</p> Signup and view all the answers

What is the benefit of using a graphical technique in vector addition?

<p>It is useful for visualizing the resultant vector (B)</p> Signup and view all the answers

What is the primary purpose of establishing a clear frame of reference in analyzing motion?

<p>To accurately describe the position of an object and any changes in that position (C)</p> Signup and view all the answers

What is the difference between distance and displacement in terms of direction?

<p>Distance does not have direction, while displacement does (C)</p> Signup and view all the answers

What is the shape of the position-time graph for an object moving at constant velocity?

<p>Straight line with a constant slope (A)</p> Signup and view all the answers

What is the unit of average speed and average velocity?

<p>Meter per second (D)</p> Signup and view all the answers

What is the significance of the direction of motion in velocity?

<p>It affects the net change in position (D)</p> Signup and view all the answers

What is the interpretation of the area under the velocity-time graph?

<p>Displacement (D)</p> Signup and view all the answers

What is the characteristic of the acceleration-time graph for an object moving with constant acceleration?

<p>Horizontal line at the value of the constant acceleration (B)</p> Signup and view all the answers

What is the difference between speed and velocity in terms of dependence on path?

<p>Speed depends on the path, while velocity does not (B)</p> Signup and view all the answers

What is the primary purpose of using average velocity?

<p>To describe the overall change in position and direction (A)</p> Signup and view all the answers

What is the relationship between the position-time graph and the velocity of an object moving at constant velocity?

<p>The gradient of the position-time graph gives the velocity (A)</p> Signup and view all the answers

What is the result of subtracting the initial position from the final position?

<p>Displacement (C)</p> Signup and view all the answers

What is the purpose of the velocity-time graph in understanding motion with constant acceleration?

<p>To determine the velocity at a specific time (B)</p> Signup and view all the answers

What is the difference between average speed and average velocity in terms of scalar or vector?

<p>Average velocity is a vector, while average speed is a scalar (A)</p> Signup and view all the answers

What is the shape of the acceleration-time graph for an object moving at constant velocity?

<p>Horizontal line at zero (A)</p> Signup and view all the answers

What can be said about the speed of an object during a round trip?

<p>The speed is non-zero because the total distance traveled is positive (A)</p> Signup and view all the answers

How is the velocity determined from an acceleration-time graph?

<p>By calculating the area under the graph (C)</p> Signup and view all the answers

What is the characteristic of the position-time graph for an object moving with constant acceleration?

<p>Parabolic curve (A)</p> Signup and view all the answers

What is the primary purpose of using average speed?

<p>To provide a measure of how fast an object is moving (A)</p> Signup and view all the answers

What is the significance of the velocity-time graph in understanding motion with constant acceleration?

<p>It is crucial for determining the acceleration and displacement (C)</p> Signup and view all the answers

What is the relationship between the acceleration-time graph and the velocity of an object?

<p>The acceleration-time graph gives the acceleration directly (D)</p> Signup and view all the answers

What is the main difference between instantaneous velocity and instantaneous speed?

<p>Instantaneous velocity has direction, whereas instantaneous speed does not (B)</p> Signup and view all the answers

What is the purpose of distinguishing between an instant in time and a time interval?

<p>To distinguish between instantaneous and average velocity (B)</p> Signup and view all the answers

Which of the following methods is used to provide a narrative of motion scenarios?

<p>Verbal descriptions (B)</p> Signup and view all the answers

What is the characteristic of a stationary object?

<p>It remains in the same position over time (D)</p> Signup and view all the answers

What is the unit of instantaneous speed?

<p>Meter per second (m/s) (A)</p> Signup and view all the answers

What is the purpose of understanding instantaneous velocity and speed?

<p>To design better control systems and safety mechanisms (B)</p> Signup and view all the answers

What is the formula for instantaneous speed?

<p>v = |v| (A)</p> Signup and view all the answers

What type of motion is characterized by a constant velocity?

<p>Uniform motion (B)</p> Signup and view all the answers

What is the purpose of using diagrams in describing motion?

<p>To visualize the trajectory and interactions in motion (B)</p> Signup and view all the answers

What is the benefit of using graphs in describing motion?

<p>To provide a clear, quantitative picture of how motion parameters change over time (D)</p> Signup and view all the answers

What is the unit of gravitational potential energy?

<p>Joules (J) (C)</p> Signup and view all the answers

What is the primary factor that affects the kinetic energy of an object?

<p>Velocity of the object (C)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it falls from a height?

<p>It decreases (A)</p> Signup and view all the answers

What is the relationship between the kinetic energy and potential energy of an object in the context of gravitational potential energy?

<p>Kinetic energy increases as potential energy decreases (B)</p> Signup and view all the answers

What is the formula for calculating the kinetic energy of an object?

<p>E_K = 1/2 mv^2 (A)</p> Signup and view all the answers

What is the energy possessed by an object due to its motion?

<p>Kinetic energy (B)</p> Signup and view all the answers

What happens to the potential energy of an object as it reaches the ground?

<p>It becomes zero (D)</p> Signup and view all the answers

What are the two factors that affect the kinetic energy of an object?

<p>Mass and velocity (A)</p> Signup and view all the answers

What is the energy an object has due to its position or state?

<p>Gravitational potential energy (B)</p> Signup and view all the answers

What is the result of the conversion of potential energy into kinetic energy as an object falls?

<p>The total energy of the object remains constant (C)</p> Signup and view all the answers

What is the purpose of the variables used in the equations of motion?

<p>To provide a precise and powerful way to analyze motion with constant acceleration. (B)</p> Signup and view all the answers

Which equation of motion relates the displacement, initial velocity, and acceleration?

<p>Third equation of motion: Δx = v_it + 1/2at^2 (B)</p> Signup and view all the answers

What is the energy an object has due to its position in a gravitational field?

<p>Gravitational potential energy (B)</p> Signup and view all the answers

What is the unit of gravitational potential energy?

<p>Joule (B)</p> Signup and view all the answers

What is the minimum number of known quantities required to solve a problem involving motion with constant acceleration?

<p>Three (D)</p> Signup and view all the answers

What is the purpose of the problem-solving strategy in motion with constant acceleration?

<p>To solve problems involving motion with constant acceleration (A)</p> Signup and view all the answers

Which of the following is not a type of potential energy?

<p>Kinetic energy (A)</p> Signup and view all the answers

What is the symbol used to denote acceleration in the equations of motion?

<p>a (A)</p> Signup and view all the answers

What is the difference between the first and second equations of motion?

<p>The first equation relates velocity, acceleration, and time, while the second equation relates displacement, initial velocity, and acceleration. (A)</p> Signup and view all the answers

What is the primary purpose of using equations of motion?

<p>To analyze motion with constant acceleration. (B)</p> Signup and view all the answers

What is the effect of adding a vector with its direction reversed?

<p>It reverses the direction of the resultant vector. (D)</p> Signup and view all the answers

What is the purpose of the resultant vector?

<p>To represent the single vector that has the same effect as the combination of individual vectors. (C)</p> Signup and view all the answers

In the head-to-tail method of vector addition, what is the correct order of drawing the vectors?

<p>Draw the first vector, then the second vector, and so on. (A)</p> Signup and view all the answers

What is the equilibrant vector?

<p>A vector with the same magnitude but opposite direction to the resultant vector. (B)</p> Signup and view all the answers

When adding vectors graphically, what is the purpose of choosing a scale?

<p>To ensure the vectors are drawn to scale. (B)</p> Signup and view all the answers

What is the result of adding the equilibrant vector to the resultant vector?

<p>A vector with zero magnitude and direction. (B)</p> Signup and view all the answers

In the context of vector addition, what does the order of addition imply?

<p>The order of addition does not affect the resultant vector. (C)</p> Signup and view all the answers

What is the significance of the resultant vector in a physics problem?

<p>It represents the single vector that has the same effect as the combination of individual vectors. (A)</p> Signup and view all the answers

What is the purpose of using a reference direction in vector addition?

<p>To define the direction of the resultant vector. (B)</p> Signup and view all the answers

What is the condition for two vectors to be equal?

<p>They have the same magnitude and the same direction. (B)</p> Signup and view all the answers

What is the relationship between the resultant vector and the individual vectors?

<p>The resultant vector has the same effect as the combination of individual vectors. (D)</p> Signup and view all the answers

What is the significance of the negative sign in a vector?

<p>It indicates a force that is opposite in direction to the reference force. (B)</p> Signup and view all the answers

What is the result of adding two vectors with the same magnitude but opposite directions?

<p>A vector with zero magnitude. (A)</p> Signup and view all the answers

What is the primary purpose of understanding vector addition?

<p>To analyze the motion of objects in multiple dimensions. (C)</p> Signup and view all the answers

What is the difference between a positive and a negative vector?

<p>A positive vector has a direction opposite to a negative vector. (C)</p> Signup and view all the answers

What is the significance of the direction of the reference positive direction?

<p>It is arbitrary and can be chosen arbitrarily. (D)</p> Signup and view all the answers

What is the primary purpose of establishing a reference frame in motion?

<p>To describe the motion of an object relative to other objects or points in space (C)</p> Signup and view all the answers

What is the result of adding two vectors with different magnitudes but the same direction?

<p>A vector with a magnitude that is the sum of the original vectors. (C)</p> Signup and view all the answers

What is the primary purpose of defining a reference direction in the head-to-tail method?

<p>To establish a clear frame of reference for vector addition. (B)</p> Signup and view all the answers

What is the result of adding or subtracting magnitudes in algebraic techniques of vector addition?

<p>A scalar quantity with no direction (A)</p> Signup and view all the answers

What is essential for understanding an object's position and movement?

<p>A reference frame (B)</p> Signup and view all the answers

What is the purpose of choosing a positive direction in algebraic techniques of vector addition?

<p>To assign positive or negative signs to the magnitudes of the vectors (D)</p> Signup and view all the answers

What is the benefit of using a reference frame in motion?

<p>It provides a context for understanding an object's position and movement (B)</p> Signup and view all the answers

What is the purpose of defining a reference direction in the head-to-tail method of vector addition?

<p>To assign a direction to the resultant vector (C)</p> Signup and view all the answers

What type of vectors are algebraic techniques of vector addition useful for?

<p>Collinear vectors (C)</p> Signup and view all the answers

What is the minimum number of directions required in a frame of reference?

<p>One (A)</p> Signup and view all the answers

What is the primary purpose of understanding vector addition?

<p>To solve problems involving multiple vector quantities (A)</p> Signup and view all the answers

What is the significance of the direction of motion in velocity?

<p>It affects the velocity of an object (A)</p> Signup and view all the answers

What is the main advantage of using displacement over distance in analyzing motion?

<p>It offers insight into the net change in position, making it a more precise tool for analyzing motion. (A)</p> Signup and view all the answers

What is the key difference between average speed and average velocity?

<p>Average speed measures total distance traveled, while average velocity measures net change in position. (B)</p> Signup and view all the answers

Why is it essential to establish a clear frame of reference when analyzing motion?

<p>To accurately describe the position of an object and any changes in that position. (D)</p> Signup and view all the answers

What is the significance of the direction of motion in velocity?

<p>It indicates the direction of motion relative to the chosen coordinate system. (A)</p> Signup and view all the answers

How do speed and velocity differ in terms of their dependence on path?

<p>Speed depends on the path taken, while velocity does not. (B)</p> Signup and view all the answers

What is the result of adding or subtracting magnitudes in algebraic techniques?

<p>The resulting vector has a different magnitude. (B)</p> Signup and view all the answers

Why is average velocity a more precise tool for analyzing motion than average speed?

<p>It offers insight into the net change in position, making it a more precise tool for analyzing motion. (A)</p> Signup and view all the answers

What is the primary purpose of choosing a reference point in a frame of reference?

<p>To define the origin of the coordinate system. (B)</p> Signup and view all the answers

What can be said about the sign of velocity?

<p>It can be positive or negative, depending on the direction of motion relative to the chosen coordinate system. (D)</p> Signup and view all the answers

What happens to the speed of an object during a round trip?

<p>It is non-zero because the total distance traveled is positive. (A)</p> Signup and view all the answers

What is the primary difference between the boy's perspective and the perspective of someone standing on the platform?

<p>The boy's perspective is relative to the train, while the platform's perspective is relative to the ground (D)</p> Signup and view all the answers

What is the significance of the sign of the position value in a one-dimensional coordinate system?

<p>It indicates the direction relative to the origin (D)</p> Signup and view all the answers

What is the distinction between distance and displacement in terms of quantity type?

<p>Distance is a scalar quantity, while displacement is a vector quantity (B)</p> Signup and view all the answers

What is the formula for displacement in a one-dimensional coordinate system?

<p>Δx = xf - xi (B)</p> Signup and view all the answers

What is the primary difference between distance and displacement in terms of path dependence?

<p>Distance is dependent on the path, while displacement is independent of the path (C)</p> Signup and view all the answers

What is the significance of the direction of motion in describing displacement?

<p>It determines the direction of the displacement (D)</p> Signup and view all the answers

What is the relationship between the frame of reference and the direction of motion?

<p>The frame of reference determines the direction of motion (B)</p> Signup and view all the answers

What is the purpose of defining a reference point in a frame of reference?

<p>To establish a clear origin for the coordinate system (A)</p> Signup and view all the answers

What is the significance of the sign of displacement in a one-dimensional coordinate system?

<p>It indicates the direction of the displacement (B)</p> Signup and view all the answers

What is the primary purpose of understanding the difference between distance and displacement?

<p>To analyze and describe motion in a one-dimensional coordinate system (C)</p> Signup and view all the answers

What does the slope of the velocity-time graph represent in uniform motion?

<p>Acceleration (C)</p> Signup and view all the answers

What is the shape of the position-time graph in motion with constant acceleration?

<p>Parabolic curve (D)</p> Signup and view all the answers

What is the area under the acceleration-time graph used to calculate?

<p>Velocity (C)</p> Signup and view all the answers

What type of motion is characterized by a horizontal line at zero in the acceleration-time graph?

<p>Uniform motion (A)</p> Signup and view all the answers

What is the relationship between the velocity-time graph and the acceleration in motion with constant acceleration?

<p>The velocity-time graph is a straight line, and the acceleration is constant (B)</p> Signup and view all the answers

What is the purpose of the position-time graph in motion with constant acceleration?

<p>To show the quadratic change in position with time (D)</p> Signup and view all the answers

What is the significance of the gradient of the position-time graph in uniform motion?

<p>It represents the velocity (B)</p> Signup and view all the answers

What is the characteristic of the acceleration-time graph in motion with constant acceleration?

<p>A horizontal line at the value of the constant acceleration (C)</p> Signup and view all the answers

What is the relationship between the velocity-time graph and the displacement in motion with constant acceleration?

<p>The area under the velocity-time graph represents the displacement (A)</p> Signup and view all the answers

What is the characteristic of the position-time graph in uniform motion?

<p>A straight line with a constant slope (C)</p> Signup and view all the answers

What is the primary difference between instantaneous velocity and instantaneous speed?

<p>Instantaneous velocity is a vector, while instantaneous speed is a scalar (B)</p> Signup and view all the answers

Which of the following methods is used to describe motion and provide a clear, quantitative picture of how motion parameters change over time?

<p>Graphs (C)</p> Signup and view all the answers

What is the unit of instantaneous speed?

<p>Metre per second (m·s⁻¹) (C)</p> Signup and view all the answers

Which type of motion involves a stationary object?

<p>No change in position, velocity, or acceleration (C)</p> Signup and view all the answers

What is the significance of distinguishing between an instant in time and a time interval?

<p>It is crucial in vector analysis and understanding motion (A)</p> Signup and view all the answers

In which field is understanding instantaneous velocity and speed particularly important?

<p>Automotive engineering (C)</p> Signup and view all the answers

What is the formula for calculating instantaneous speed?

<p>v = |̅v| (A)</p> Signup and view all the answers

What is the primary purpose of using diagrams to describe motion?

<p>To visualize the trajectory and interactions in motion (D)</p> Signup and view all the answers

What is the significance of instantaneous speed in analyzing motion?

<p>It provides a snapshot of how fast an object is moving at a particular moment (A)</p> Signup and view all the answers

Why is it essential to understand the difference between instantaneous velocity and instantaneous speed?

<p>It is crucial in understanding the complete motion of an object (C)</p> Signup and view all the answers

What is the primary reason for using the four equations of motion in solving problems involving uniformly accelerated motion?

<p>To analyze motion with constant acceleration (B)</p> Signup and view all the answers

What is the relationship between the initial velocity and the final velocity in the first equation of motion?

<p>The final velocity is the sum of the initial velocity and the acceleration multiplied by time (A)</p> Signup and view all the answers

What is the main factor that influences the kinetic energy of an object?

<p>The velocity of the object (D)</p> Signup and view all the answers

What is the purpose of checking the units of the quantities in the equation of motion?

<p>To ensure that the quantities are in the correct units (B)</p> Signup and view all the answers

What is the difference between gravitational potential energy and kinetic energy?

<p>Gravitational potential energy is the energy an object has due to its position, while kinetic energy is the energy an object has due to its motion (B)</p> Signup and view all the answers

What is the relationship between gravitational potential energy and height?

<p>Gravitational potential energy increases linearly with the height (A)</p> Signup and view all the answers

What is the energy conversion that occurs when an object falls from a height?

<p>Potential energy is converted to kinetic energy (B)</p> Signup and view all the answers

What is the minimum number of known quantities required to solve a problem involving motion with constant acceleration?

<p>Three (C)</p> Signup and view all the answers

What is the purpose of the problem-solving strategy in motion with constant acceleration?

<p>To solve problems involving motion with constant acceleration (D)</p> Signup and view all the answers

What is the unit of kinetic energy?

<p>Joules (J) (A)</p> Signup and view all the answers

What is the unit of gravitational potential energy?

<p>Joules (D)</p> Signup and view all the answers

What is the factor that determines the amount of kinetic energy an object possesses?

<p>Both the mass and velocity of the object (B)</p> Signup and view all the answers

What is the difference between the first and second equations of motion?

<p>The first equation relates initial velocity, final velocity, and time, while the second equation relates displacement, initial velocity, and acceleration (C)</p> Signup and view all the answers

What happens to the kinetic energy of an object as it moves at a constant velocity?

<p>It remains constant (B)</p> Signup and view all the answers

What is the purpose of the concept of gravitational potential energy?

<p>To describe the energy an object has due to its position or state (D)</p> Signup and view all the answers

What is the relationship between the height of an object and its gravitational potential energy?

<p>Gravitational potential energy is directly proportional to the height (D)</p> Signup and view all the answers

What is the relationship between the displacement and the initial velocity in the second equation of motion?

<p>The displacement is the product of the initial velocity and time, divided by 2 (A)</p> Signup and view all the answers

What is the energy conversion that occurs when an object is lifted from the ground to a height?

<p>Kinetic energy is converted to potential energy (A)</p> Signup and view all the answers

What is the formula for calculating the kinetic energy of an object?

<p>E_K = 1/2 mv^2 (A)</p> Signup and view all the answers

What happens to the gravitational potential energy of an object as it falls from a height?

<p>It decreases (C)</p> Signup and view all the answers

What is the primary reason why velocity is a more important concept than speed in understanding motion?

<p>Velocity takes into account the direction of motion, whereas speed does not. (A)</p> Signup and view all the answers

If an object's velocity is increasing, what can be said about its acceleration?

<p>The acceleration is positive. (D)</p> Signup and view all the answers

What is the purpose of calculating average acceleration?

<p>To determine the change in velocity over a time interval. (A)</p> Signup and view all the answers

What is the difference between instantaneous velocity and average velocity?

<p>Instantaneous velocity is a measure of the velocity at a specific instant, while average velocity is a measure of the velocity over a time interval. (A)</p> Signup and view all the answers

What is the significance of the direction of motion in understanding acceleration?

<p>The direction of motion determines the sign of the acceleration. (B)</p> Signup and view all the answers

What is the relationship between velocity and acceleration when an object is slowing down?

<p>Velocity is positive, and acceleration is negative. (C)</p> Signup and view all the answers

What is the purpose of using the concept of acceleration in understanding motion?

<p>To determine how quickly an object's velocity changes over time. (C)</p> Signup and view all the answers

What is the significance of the formula for instantaneous velocity?

<p>It is used to calculate the velocity of an object at a specific instant in time. (A)</p> Signup and view all the answers

What is the difference between displacement and distance?

<p>Displacement is a measure of the total distance traveled, while distance is a measure of the straight-line distance from the starting point to the endpoint. (C)</p> Signup and view all the answers

What is the significance of the concept of acceleration in understanding motion?

<p>It helps to determine how quickly an object's velocity changes over time. (B)</p> Signup and view all the answers

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