A ball moving with a velocity 20 m sec has a mass of 50 gm If collides against a wall normally and is rebounded normally with

Question

A ball moving with a velocity 20 m sec has a mass of 50 gm If collides against a wall normally and is rebounded normally with the same speed If the time of impact of the ball and the wall is 40 milli seconds the average force exerted on the wall in dynes is 2 1 25 x 107 4 5 x 106 1 zero 3 2 5 107

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