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A ball with initial momentum vec P colli...

A ball with initial momentum `vec P` collides with rigid wall elastically. If `vec(P^(1))` be its momentum after collision then

A

`vec(P^(1)) = vec P`

B

`vec(P^(1)) = - vec P`

C

`vec(P^(1)) = 2 vec P`

D

`vec(P^(1)) = -2 vec P`

Text Solution

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The correct Answer is:
B
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