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Physics (AS & A Level) · Feb / March 2023 · Paper 12 · Question 4

9702Momentum and Newton’s laws of motion

A snooker ball of mass 0.20 kg has a collision so that its direction of movement changes by an angle of 90°, as shown. The ball has a speed of 0.40 m s⁻¹ before the collision and a speed of 0.30 m s⁻¹ after the collision. What is the magnitude of the change in momentum of the snooker ball?

  1. A0.020 kg m s⁻¹
  2. B0.10 kg m s⁻¹
  3. C0.14 kg m s⁻¹
  4. D0.50 kg m s⁻¹

As printed in the paper

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Correct answer: B. 0.10 kg m s⁻¹

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