Physics: Speed, Velocity, and Acceleration Definitions
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Questions and Answers

What is the definition of velocity?

  • Measure of distance traveled in a given period of time with a direction. (correct)
  • Measure of distance traveled in a given period of time without direction.
  • An object moving at a constant speed.
  • The rate at which velocity is changing.

    • What does constant velocity refer to?

  • An object accelerating.
  • The total distance traveled.
  • An object moving at a constant speed and in a constant direction. (correct)
  • An object's speed that is changing direction.

    • What is instantaneous velocity?

    The velocity of an object at a specific instant.

    How do you calculate average velocity?

    <p>Total distance traveled divided by total time taken.</p> Signup and view all the answers

    What does terminal velocity represent?

    <p>The top speed an object can reach.</p> Signup and view all the answers

    What is the definition of speed?

    <p>Measure of the distance traveled in a given period of time.</p> Signup and view all the answers

    Define constant speed.

    <p>An object moving at a constant speed.</p> Signup and view all the answers

    What is instantaneous speed?

    <p>The speed of an object at a specific instant.</p> Signup and view all the answers

    What is average speed?

    <p>Total distance traveled divided by the total time taken.</p> Signup and view all the answers

    What is acceleration?

    <p>The rate at which velocity is changing.</p> Signup and view all the answers

    What is constant acceleration?

    <p>A moving object that is not changing speed or direction.</p> Signup and view all the answers

    How do you calculate average acceleration?

    <p>The change in velocity divided by the change in time.</p> Signup and view all the answers

    What is negative acceleration?

    <p>When an object is slowing down.</p> Signup and view all the answers

    What are vectors?

    <p>Quantities represented by an arrow that has both direction and magnitude.</p> Signup and view all the answers

    Define magnitude in physics.

    <p>The size or length of something.</p> Signup and view all the answers

    What are scalars?

    <p>Quantities with just magnitude alone.</p> Signup and view all the answers

    What is distance in terms of scalars?

    <p>Measurement of the actual path covered.</p> Signup and view all the answers

    What is displacement?

    <p>The straight line distance between two points.</p> Signup and view all the answers

    What is the Pythagorean theorem?

    <p>c^2 = a^2 + b^2</p> Signup and view all the answers

    What is a resultant vector?

    <p>The result of vector addition a + b.</p> Signup and view all the answers

    Study Notes

    Velocity

    • Defined as the measure of distance traveled over time, including direction.

    Constant Velocity

    • Occurs when an object maintains the same speed and direction throughout its motion.

    Instantaneous Velocity

    • The specific velocity of an object at a particular moment in time.

    Average Velocity

    • Calculated by taking the total distance traveled and dividing it by the total time taken for that distance.

    Terminal Velocity

    • The maximum speed achieved by an object as it falls through a fluid, where gravitational force is balanced by drag.

    Speed

    • A scalar quantity that indicates how fast an object is moving, measured as distance over time.

    Constant Speed

    • Describes motion at unchanging speed, with no variations over the time period considered.

    Instantaneous Speed

    • Refers to the speed of an object at a specific moment in time, equivalent to instantaneous velocity when direction is included.

    Average Speed

    • Determined by dividing total distance traveled by the total time taken, similar to average velocity but direction is not considered.

    Acceleration

    • Represents the rate of change of velocity, encompassing increases or decreases in speed and changes in direction.

    Constant Acceleration

    • Characterizes a motion where the object's speed and direction remain unaltered over time.

    Average Acceleration

    • Calculated by changing the velocity and dividing it by the time taken for that change.

    Negative Acceleration

    • Indicates a slowing down of an object, often referred to as deceleration.

    Vectors

    • Quantities that possess both magnitude and direction, represented visually by arrows.

    Magnitude

    • The measure of size or length of a physical quantity, often used in conjunction with vectors.

    Scalars

    • Quantities that are defined only by their magnitude, lacking any directional component.

    Distance (Scalar)

    • Measurement of the actual path traveled by an object, expressed as a scalar quantity.

    Displacement (Vector)

    • The shortest straight-line distance between two points, characterized by both distance and direction.

    Pythagorean Theorem

    • A fundamental relation in Euclidean geometry, expressed as ( c^2 = a^2 + b^2 ), used for calculating the lengths in right triangles.

    Resultant Vector

    • The composite outcome when two or more vectors are added together, resulting in a single vector.

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    Description

    This quiz covers key definitions related to speed, velocity, and acceleration. Each flashcard presents a term along with its precise definition, enhancing your understanding of essential physics concepts. Perfect for anyone studying physics fundamentals.

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