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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 obtains velocity u and big ball v. Then what is the value of v

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a
M−mM+mu
b
mM+mu
c
2mM+mu
d
MM+mu
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detailed solution

Correct option is A

From the formulae  v1=m1−m2m1+m2 u1We get  v=M−mM+m u


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