Momentum

Momentum Quiz

Spec 1.6 · Cambridge IGCSE Physics: Quiz

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5 questions, one answer each

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  1. 1. A car of mass 1500 kg is travelling at a velocity of 8 m/s. Calculate its momentum.

    • A. 12 000 kg m/s
    • B. 1508 kg m/s
    • C. 187.5 kg m/s
    • D. 120 000 kg m/s

  2. 2. What is the impulse applied to an object when a force of 50 N acts on it for 0.4 seconds?

    • A. 20 N s
    • B. 50 N s
    • C. 125 N s
    • D. 200 N s

  3. 3. A ball of mass 0.5 kg moving at 6 m/s collides with a stationary ball of mass 0.5 kg. After collision, the first ball stops completely. Using conservation of momentum, what is the velocity of the second ball immediately after collision?

    • A. 3 m/s
    • B. 6 m/s
    • C. 12 m/s
    • D. 0 m/s

  4. 4. A resultant force of 12 N acts on an object for 5 seconds. The object's momentum changes from 20 kg m/s to 80 kg m/s. Which statement is correct?

    • A. The force cannot be 12 N because the momentum change requires a larger force
    • B. The force must be exactly 12 N as this equals the change in momentum divided by time
    • C. The change in momentum is 100 kg m/s, which is incorrect for this force
    • D. The resultant force cannot be determined from the given information

  5. 5. Two ice skaters push off from each other on frictionless ice. Skater A has mass 60 kg and moves at 2 m/s in one direction. Skater B has mass 80 kg. Both skaters were initially at rest. What is the velocity of skater B after the push, and in which direction?

    • A. 1.5 m/s in the same direction as skater A
    • B. 1.5 m/s in the opposite direction to skater A
    • C. 2.7 m/s in the opposite direction to skater A
    • D. 1 m/s in the same direction as skater A

Quiz