JEE Main Physics question

A body is moving with velocity v, breaks up into two equal parts. One of the parts retraces back with velocity v. Then the velocity of the other part is [DCE 2004]

(A)v in forward direction
(B)3v in forward directionCorrect
(C)v in backward direction
(D)3v in backward direction

Answer: (B)

Solution

Let the original mass be m with initial momentum mv. After splitting into two equal masses (m/2 each), one retraces back with velocity −v while the

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Question ID VK-153923