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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M−mM+mu

mM+mu

2mM+mu

MM+mu

answer is A.

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Detailed Solution

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

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