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Q.

A bag of mass M hangs by a long thread and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then for the combined system (bag + bullet)

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a

momentum is mMv(M+m)

b

KE = 12Mv2

c

momentum is mv

d

KE is m2v22(M+m)

answer is C.

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Detailed Solution

Apply conservation of linear momentumKE=ρ22×maSS
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