Physics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 10

A ball of mass 0.16 kg is travelling horizontally at a speed of 20 m s^-1. It collides with a wall and rebounds with a speed of 15 m s^-1 along its original path. The ball is in contact with the wall for a time of 1.0 ms. What is the average force exerted by the wall on the ball?

1. A800 N
2. B2400 N
3. C3200 N
4. D5600 N

As printed in the paper