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A body of mass M collides against a wall...

A body of mass `M` collides against a wall with a velocity v and retraces its path with the same speed. The change in momentum is (take initial direction of velocity as positive)

A

Zero

B

4Mv

C

Mv

D

`-2` Mv

Text Solution

Verified by Experts

The correct Answer is:
D
Change in momentum `= m vec(v)_(2)- m vec(v)_(1)= -mv - mv= -2mv`
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