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A particle of mass m moving with velocit...

A particle of mass m moving with velocity `vecV` makes a head on elastic collision with another particle of same mass initially at rest. The velocity of the first particle after the collision will be

A

`vecV`

B

`-vecV`

C

`-2vecV`

D

Zero

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The correct Answer is:
D

In perfectly elastic head on collision of equal masses velocities gets interchanged
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