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A ball of mass M moving with a velocity ...

A ball of mass `M` moving with a velocity `v` collides perfectly inelastically with another ball of same mass but moving with a velocity `v` in the opposite direction. After collision

A

both the balls come to rest

B

the velocities are exchanged between the two balls

C

both of them move at right angles to the original line of motion

D

one ball comes to rest and another ball travels back with velocity `2v`

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The correct Answer is:
A
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