Question

A ball of mass x kg and speed y m/s, moves towards a wall and after a perfectly elastic collision starts moving exactly in the opposite direction with same speed. Find the change in momentum.​

Answer 1

Answer:

the ball bounces back with the same speed i.e

v.. u=vî and v = vi

thus change in momentum AP = [mv-(-mv) ]î=2mvi-

|angle P| =2 mv

Explanation:

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