Lesson 6.03a-e

6.03a-e Linear momentum and impulse Quiz: OCR Further Maths, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 6.03a-e, Linear momentum and impulse: 20 multiple choice questions for the OCR Further Maths (H245), Unit 3: Mechanics (Y543), written with Revision Ninja.

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The 20 questions

  1. What is the standard SI unit used for measuring impulse?

    • J
    • W
    • N
    • N s

  2. Which formula correctly defines the linear momentum of an object?

    • p = mv
    • p = m / v
    • p = 0.5mv²
    • p = ma

  3. According to Newton's second law, force is the rate of change of what quantity?

    • Velocity
    • Momentum
    • Acceleration
    • Kinetic energy

  4. A 3 kg mass accelerates from 2 m s⁻¹ to 6 m s⁻¹. What is the momentum change?

    • 18 kg m s⁻¹
    • 6 kg m s⁻¹
    • 12 kg m s⁻¹
    • 24 kg m s⁻¹

  5. A constant force of 10 N acts on a particle for 4 seconds. Calculate the impulse.

    • 14 N s
    • 0.4 N s
    • 40 N s
    • 2.5 N s

  6. What law states total momentum is conserved when no net external force acts?

    • Hooke's law
    • Conservation of momentum
    • Newton's first law
    • Conservation of energy

  7. A 2 kg ball hits a wall at 5 m s⁻¹ and rebounds at 3 m s⁻¹. Calculate impulse magnitude.

    • 2 N s
    • 16 N s
    • 4 N s
    • 10 N s

  8. Which type of mathematical quantity is impulse classified as in mechanics?

    • Matrix
    • Tensor
    • Scalar
    • Vector

  9. The area under which force graph represents the impulse delivered to an object?

    • Force-displacement graph
    • Force-time graph
    • Velocity-time graph
    • Acceleration-time graph

  10. A variable force F = 3t² N acts from t = 0 s to t = 2 s. Find impulse.

    • 4 N s
    • 8 N s
    • 6 N s
    • 12 N s

  11. A 4 kg particle has velocity 3i - 2j m s⁻¹. What is its momentum vector?

    • 7i + 2j kg m s⁻¹
    • 12i - 8j kg m s⁻¹
    • 12i + 8j kg m s⁻¹
    • 0.75i - 0.5j kg m s⁻¹

  12. An impulse vector is given by 6i + 8j N s. What is its magnitude?

    • 2 N s
    • 10 N s
    • 14 N s
    • 48 N s

  13. What happens to two objects during a completely inelastic collision?

    • They rebound elastically
    • They stick together
    • Total momentum decreases
    • Kinetic energy increases

  14. A 2 kg mass at 4 m s⁻¹ collides and coalesces with a stationary 3 kg mass. Find final speed.

    • 1.6 m s⁻¹
    • 0.8 m s⁻¹
    • 2.67 m s⁻¹
    • 2.0 m s⁻¹

  15. Force F = (6ti + 4j) N acts from t = 0 s to t = 3 s. Find impulse vector.

    • 9i + 4j N s
    • 18i + 12j N s
    • 27i + 12j N s
    • 54i + 12j N s

  16. Which quantity is always conserved in any collision within an isolated system?

    • Momentum
    • Kinetic energy
    • Speed
    • Mechanical energy

  17. A 0.5 kg ball experiences an impulse of 5 N s. What is its change in speed?

    • 5 m s⁻¹
    • 10 m s⁻¹
    • 2.5 m s⁻¹
    • 0.1 m s⁻¹

  18. A 1000 kg stationary cannon fires a 10 kg shell at 200 m s⁻¹. What is recoil speed?

    • 0.2 m s⁻¹
    • 5 m s⁻¹
    • 2 m s⁻¹
    • 20 m s⁻¹

  19. What type of collision occurs when total kinetic energy is conserved before and after impact?

    • Coalescing collision
    • Inelastic collision
    • Explosive collision
    • Elastic collision

  20. Initial momentum is 4i - 3j kg m s⁻¹ and final momentum is 10i + 5j kg m s⁻¹. What is impulse?

    • -6i - 8j N s
    • 14i + 2j N s
    • 6i + 8j N s
    • 6i + 2j N s

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