A space craft of mass M is moving with velocity V and suddenly explodes into two pieces. A part of it of mass m becomes at rest, then the velocity of other part will be
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a
MVM−m
b
MVM+m
c
mVM−m
d
(M+m)Vm
answer is A.
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Detailed Solution
After explosion m mass comes at rest and let Rest (M-m) mass moves with velocity v.By the law of conservation of momentum MV=(M−m)v⇒v=MV(M−m)