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Physics (AS & A Level) · May / June 2017 · Paper 13 · Question 9

9702Momentum and Newton’s laws of motion

A ball of mass 2.0 kg travels horizontally with a speed of 4.0 m s–1. The ball collides with a wall and rebounds in the opposite direction with a speed of 2.8 m s–1. The time of the collision is 150 ms. What is the average force exerted on the wall?

  1. A16 N
  2. B37 N
  3. C53 N
  4. D91 N

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Correct answer: D. 91 N

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