Lesson 3.4.1.3

3.4.1.3 Motion along a straight line Quiz: AQA Physics, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.4.1.3, Motion along a straight line: 20 multiple choice questions for the AQA Physics (7408), Unit 4: Mechanics and materials, written with Revision Ninja.

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The 20 questions

  1. Which physical quantity is defined as the rate of change of displacement?

    • Speed
    • Momentum
    • Velocity
    • Acceleration

  2. Which physical quantity is defined as the rate of change of velocity?

    • Acceleration
    • Momentum
    • Force
    • Velocity

  3. What does the gradient of a displacement-time graph represent?

    • displacement
    • acceleration
    • distance
    • velocity

  4. What does the gradient of a velocity-time graph represent?

    • velocity
    • displacement
    • acceleration
    • force

  5. What does the area under a velocity-time graph represent?

    • acceleration
    • momentum
    • displacement
    • velocity

  6. Which equation of uniform acceleration does not contain displacement?

    • s = ((u + v)/2) t
    • v = u + at
    • s = ut + (1/2)at^2
    • v^2 = u^2 + 2as

  7. What is the approximate acceleration of free fall near the Earth's surface?

    • 98 m/s^2
    • 9.8 m/s
    • 9.8 m/s^2
    • 0.98 m/s^2

  8. A car accelerates from 0 to 20 m/s in 5 s. What is its acceleration?

    • 4.0 m/s^2
    • 0.25 m/s^2
    • 20 m/s^2
    • 100 m/s^2

  9. A body starts from rest with acceleration 2 m/s^2 for 4 s. What displacement does it travel?

    • 8 m
    • 16 m
    • 32 m
    • 4 m

  10. A car travels at 15 m/s and decelerates at 3 m/s^2 until stopped. How long does it take?

    • 3 s
    • 45 s
    • 12 s
    • 5 s

  11. A body starts from rest and accelerates at 5 m/s^2 over 10 m. What is its final speed?

    • 10 m/s
    • 5 m/s
    • 7.1 m/s
    • 50 m/s

  12. A body accelerates uniformly from 4 m/s to 12 m/s. What is its average velocity?

    • 4 m/s
    • 8 m/s
    • 16 m/s
    • 12 m/s

  13. What property of a displacement-time graph represents instantaneous velocity?

    • Tangent gradient
    • Y-intercept
    • Area under graph
    • Chord gradient

  14. What physical quantity is represented by the area under an acceleration-time graph?

    • Instantaneous acceleration
    • Change in velocity
    • Total displacement
    • Average speed

  15. What is the gradient of a velocity-time graph for an object in free fall?

    • Exponentially increasing
    • Zero
    • Decreasing to zero
    • Constant at g

  16. In a freefall experiment, a graph of displacement against t^2 is plotted. What is its gradient?

    • g
    • g/2
    • g^2
    • 2g

  17. A ball is dropped from 20 m. Taking g = 10 m/s^2, how long does it take to reach the ground?

    • 4 s
    • 1.4 s
    • 2 s
    • 1 s

  18. A car accelerates uniformly from rest to 10 m/s in 4 s, then moves at constant speed for 6 s. What is its total displacement?

    • 80 m
    • 100 m
    • 40 m
    • 60 m

  19. A cyclist rides 3 km east and then 3 km west in 20 minutes. What are the average speed and average velocity?

    • 18 km/h and 18 km/h
    • 18 km/h and 0 km/h
    • 0 km/h and 18 km/h
    • 9 km/h and 0 km/h

  20. A student stops a timer 0.1 s late each time in a freefall experiment. What is the effect on the measured g?

    • g is overestimated
    • g is unchanged
    • g is underestimated
    • g is doubled

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