Test Academy | A big ball of mass M, moving with velocity u strikes a small ball of mass m, which is at rest. Finally small ball attains velocity u and big ball v. Then what is the value of v (M-m/M+m)u, (m/M+m)u, (2m/M+m)u, (M/M+m)u

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A big ball of mass M, moving with velocity u strikes a small ball of mass m, which is at rest. Finally small ball attains velocity u and big ball v. Then what is the value of v

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(M-m/M+m)u
(m/M+m)u
(2m/M+m)u
(M/M+m)u

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