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A bullet of mass m moving with velocity v strikes a block of mass M at rests

A bullet of mass m moving with velocity v strikes a block of mass M at rests and gets embedded into it .The kinetic energy of the composite block will be

Options

(a) 1/2 mv²x m/(m+M)
(b) 1/2 mv²x M/(m+M)
(c) 1/2 Mv²x (M+m)/M
(d) 1/2 Mv²x m/(m+M)

Correct Answer:

1/2 mv²x m/(m+M)

Explanation:

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