Physics Kinematics Quiz
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Questions and Answers

What is the SI unit of time?

  • Day
  • Minute
  • Hour
  • Second (correct)

    • Distance and displacement are considered the same in physics.

    False

    What is kinematics?

    A branch of mechanics that describes the motion of objects.

    To convert minutes to seconds, you should multiply by ______.

    <p>60</p> Signup and view all the answers

    How many seconds are there in one hour?

    <p>3600 seconds</p> Signup and view all the answers

    Match the time units with their equivalent in seconds:

    <p>Minute = 60 Hour = 3600 Day = 86400 Week = 604800</p> Signup and view all the answers

    Acceleration is a scalar quantity.

    <p>False</p> Signup and view all the answers

    The total length covered when moving between two points is referred to as ______.

    <p>distance</p> Signup and view all the answers

    What is the SI unit of distance?

    <p>metre</p> Signup and view all the answers

    Distance is a vector quantity that includes magnitude and direction.

    <p>False</p> Signup and view all the answers

    What happens to the displacement when an object returns to its original position?

    <p>The displacement will be zero.</p> Signup and view all the answers

    The distance covered is always ______.

    <p>positive</p> Signup and view all the answers

    Match the following conversions:

    <p>1 km = 1000 m 1 m = 1000 mm 1 cm = 10 mm</p> Signup and view all the answers

    How do you convert from millimetres to centimetres?

    <p>Divide by 10</p> Signup and view all the answers

    Displacement can only be positive.

    <p>False</p> Signup and view all the answers

    What defines displacement?

    <p>Displacement is distance moved in a particular direction.</p> Signup and view all the answers

    The total distance covered is equal to the ______ of all distances travelled in different directions.

    <p>sum</p> Signup and view all the answers

    Which of the following represents displacement?

    <p>Distance in one direction</p> Signup and view all the answers

    If a blue car moves 500 m west and a red car moves 500 m east, what are their respective displacements?

    <p>Blue car: -500 m or 500 m west; Red car: 500 m or 500 m east.</p> Signup and view all the answers

    What does a steeper gradient indicate on a distance-time graph?

    <p>Greater speed</p> Signup and view all the answers

    The gradient at a constant speed is negative.

    <p>False</p> Signup and view all the answers

    How is average speed calculated?

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

    To find the gradient, divide the change in _____ by the change in _____.

    <p>y, x</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Gradient = The rate of change in a graph Tangent = A straight line touching a curve at a point Instantaneous speed = Speed at a specific point in time Average speed = Total distance divided by total time</p> Signup and view all the answers

    Which of the following statements about the gradient of a distance-time graph is true?

    <p>Both A and C</p> Signup and view all the answers

    What describes the movement of the ball from A to B?

    <p>The ball is moving downwards and accelerating.</p> Signup and view all the answers

    The gradient of a line is always positive.

    <p>False</p> Signup and view all the answers

    The velocity of the ball changes sign at point B.

    <p>True</p> Signup and view all the answers

    What is the unit of gradient on a distance-time graph?

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

    What type of acceleration does the ball experience while moving downwards?

    <p>constant acceleration</p> Signup and view all the answers

    The formula for average speed is _____ = _____ / _____.

    <p>v, s, t</p> Signup and view all the answers

    The direction of the ball's velocity from B to C is ______.

    <p>upward</p> Signup and view all the answers

    Match the following descriptions with appropriate keywords:

    <p>Change in y = ∆y Change in x = ∆x Speed at a specific moment = Instantaneous speed Overall travel speed = Average speed</p> Signup and view all the answers

    Match the following phrases with their correct descriptions:

    <p>Acceleration downward = The ball moves from A to B Velocity upward = The ball moves from B to C Positive slope = Indicates decreasing speed Negative slope = Indicates increasing speed</p> Signup and view all the answers

    What is indicated by the slope of the displacement-time graph from B to C?

    <p>Velocity is decreasing.</p> Signup and view all the answers

    The area under the graph provides the total speed traveled by the ball.

    <p>False</p> Signup and view all the answers

    What happens to the ball's velocity from B to C?

    <p>it decreases</p> Signup and view all the answers

    At point B, the ball ______ the ground.

    <p>hits</p> Signup and view all the answers

    What is the sign of the velocity while moving downwards?

    <p>Negative</p> Signup and view all the answers

    What does the equation $v = u + at$ represent in physics?

    <p>Final velocity after a time interval.</p> Signup and view all the answers

    The area under a velocity-time graph represents the object's acceleration.

    <p>False</p> Signup and view all the answers

    What is the formula for calculating displacement when an object has uniform acceleration?

    <p>s = (u + v) * t / 2</p> Signup and view all the answers

    In the equation for average velocity, the term $s$ represents __________.

    <p>displacement</p> Signup and view all the answers

    Match the formula to its description:

    <p>v = u + at = Final velocity after time s = (u + v)t / 2 = Displacement with average velocity a = (v - u) / t = Acceleration formula s = ut + (1/2)at^2 = Displacement with initial velocity and acceleration</p> Signup and view all the answers

    The equation $s = ut + (1/2)at^2$ can be used only in cases of constant acceleration.

    <p>True</p> Signup and view all the answers

    Study Notes

    Intermediate Level Physics 1st Year - Linear Motion

    • Rectilinear Motion: Focuses on motion along a straight line.
    • Distance: Total length covered. Measured in a positive value.
    • Displacement: Length and direction of the straight line between the starting and ending points. Can be positive or negative.
    • Speed: Rate of distance covered. Measured in m/s or km/h.
    • Velocity: Rate of change of displacement. Measured in m/s in a specific direction. Can be positive or negative; indicates direction.
    • Acceleration: Rate of change of velocity. Measured in m/s². A change in velocity or direction is considered acceleration.

    Time Units

    • Minute: 60 seconds
    • Hour: 3600 seconds
    • Day: 86,400 seconds
    • Week: 7 days
    • Year: 365.25 days

    Important Relationships

    • Average speed: Total distance divided by total time
    • Instantaneous speed: Speed at a specific moment; found by dividing a small distance by a small time.
    • Velocity: Displacement divided by time taken

    Graphs in Motion

    • Displacement-time graph: Horizontal line = stationary; Straight line (not horizontal) = constant velocity; Curved line = acceleration. y-intercept gives the initial displacement. Slope gives the velocity.
    • Speed-time graph: Horizontal line = constant speed, constant acceleration = 0; Straight line (not horizontal) = acceleration; Curved line = variable acceleration; y-intercept gives the initial speed; Slope gives the acceleration.
    • Acceleration-time graph: horizontal line=constant acceleration; straight line (not horizontal)=variable acceleration; y-intercept =initial acceleration; area under the line=change in velocity.
    • Using graphs to find values: Identify points or sections of interest on the graph to calculate values like acceleration, speed, distance.

    Equations of Uniformly Accelerated Motion

    • v = u + at (final velocity = initial velocity + acceleration x time)
    • s = ut + ½at² (displacement = initial velocity x time + ½ x acceleration x time²)
    • v² = u² + 2as (final velocity² = initial velocity² + 2 x acceleration x displacement)
    • s = ½ (u+v)t (displacement = ½ (initial velocity + final velocity) x time)

    Uniform Acceleration Experiments

    • Measure acceleration due to gravity, g via a free-fall experiment.
    • Equipment includes an electronic timer, electromagnet, iron ball, etc.
    • Procedure involves measuring the fall height s, and the time taken t. Calculate g using the equation: s = ½gt²

    Projectile Motion

    • Motion of an object under the influence of gravity only.
    • Key factors: initial velocity, angle of projection, acceleration due to gravity (g).
    • Key Concepts: Horizontal and vertical motions separate; gravity only affects vertical motion.
    • Different types of projectile motions-dropped, vertical, horizontal.
    • Graphs for projectile motion can be used to calculate variables.

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    Related Documents

    Linear Motion Intermediate Physics Notes (PDF)

    Description

    Test your knowledge on kinematics in physics with this quiz. You'll explore concepts such as distance, displacement, and time units. Perfect for students looking to solidify their understanding of motion and its measurements.

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