Question
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
Options :
(M-m/M+m)u
(m/M+m)u
(2m/M+m)u
(M/M+m)u
Answer :
(M-m/M+m)u
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