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Edexcel | Physics WPH0 | W 17 4 1 | 1 hour 30 minutes
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1 Mark

A ball of mass m with velocity v strikes a wall perpendicularly and bounces off with the same speed in the opposite direction. The collision takes time t.

Which of the following is the mean force acting on the ball during the collision?

A mv/t

B 2mv/t

C –mv/t

D –2mv/t

D is the correct answer

A, B, C all based on mv/t but with or without factor 2 and some not negative

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