Lesson 3.1.2

3.1.2 Linear motion Quiz: OCR Physics, Unit 2

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.1.2, Linear motion: 20 multiple choice questions for the OCR Physics (H156), Unit 2: Forces and motion, written with Revision Ninja.

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The 20 questions

  1. Which equation of motion for constant acceleration does NOT contain time t?

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

  2. Which equation gives displacement as average velocity multiplied by time?

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

  3. The acceleration of free fall near the Earth's surface, ignoring air resistance, is approximately:

    • 0.98 m s^-2
    • 9.8 m s^-2
    • 98 m s^-2
    • 9.8 m s^-1

  4. What value stays constant for all objects in free fall without air resistance?

    • Terminal velocity
    • Momentum
    • Gravitational force
    • Acceleration

  5. Total stopping distance is thinking distance plus which other quantity?

    • Reaction distance
    • Braking distance
    • Following distance
    • Safety margin

  6. Which vehicle factor has a quadratic relationship with braking distance?

    • Vehicle mass
    • Tyre friction
    • Reaction time
    • Speed

  7. In a g determination experiment, what holds and releases the steel ball bearing?

    • Ticker timer
    • Electromagnet
    • Light gate
    • Trapdoor switch

  8. An object falls from rest for 3.0 s with g = 9.8 m s^-2 and no air resistance. How far does it fall?

    • 44.1 m
    • 14.7 m
    • 29.4 m
    • 88.2 m

  9. A car accelerates uniformly from 10 m s^-1 to 30 m s^-1 over a distance of 200 m. What is its acceleration?

    • 2.0 m s^-2
    • 0.5 m s^-2
    • 4.0 m s^-2
    • 8.0 m s^-2

  10. A train starts from rest and accelerates uniformly at 1.5 m s^-2 for 12 s. What is its final speed?

    • 13.5 m s^-1
    • 27 m s^-1
    • 8.0 m s^-1
    • 18 m s^-1

  11. A car slows uniformly from 12 m s^-1 to rest in 6.0 s. How far does it travel while slowing?

    • 18 m
    • 2.0 m
    • 36 m
    • 72 m

  12. At 25 m s^-1 a driver has a reaction time of 0.6 s. What is the thinking distance?

    • 15 m
    • 24 m
    • 1.5 m
    • 42 m

  13. A car travelling at 30 m s^-1 decelerates uniformly at 6 m s^-2 until it stops. What is its braking distance?

    • 25 m
    • 150 m
    • 75 m
    • 45 m

  14. A driver travelling at 20 m s^-1 has a reaction time of 0.5 s and then decelerates at 5 m s^-2. What is the total stopping distance?

    • 40 m
    • 50 m
    • 60 m
    • 10 m

  15. A ball is dropped from rest from a height of 20 m. Ignoring air resistance and using g = 9.8 m s^-2, what is its speed on landing?

    • 39.2 m s^-1
    • 196 m s^-1
    • 19.8 m s^-1
    • 9.9 m s^-1

  16. A ball is thrown vertically upwards at 15 m s^-1 with g = 9.8 m s^-2. How long does it take to reach its highest point?

    • 0.65 s
    • 3.1 s
    • 1.5 s
    • 1.0 s

  17. A car starts from rest and accelerates at 2 m s^-2 for 10 s, then travels at a constant 20 m s^-1 for a further 10 s. What is the total distance travelled?

    • 100 m
    • 200 m
    • 300 m
    • 400 m

  18. A car decelerating uniformly at 4 m s^-2 reduces its speed from 30 m s^-1 to 10 m s^-1. What distance does it travel?

    • 50 m
    • 25 m
    • 200 m
    • 100 m

  19. A car starts from rest and accelerates uniformly at 2 m s^-2 through a distance of 100 m. How long does this take?

    • 14 s
    • 50 s
    • 10 s
    • 5 s

  20. A car's braking distance from a given deceleration is measured. If its speed doubles while the deceleration stays the same, the braking distance:

    • Stays the same
    • Halves
    • Quadruples
    • Doubles

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