A space craft of mass 'M', moving with velocity 'v' suddenly breaks into two pieces. After the explosion mass 'm' becomes stationary. What is the velocity of the other part of the craft ?
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a
MvM-m
b
v
c
mvM
d
M-mmv
answer is A.
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Detailed Solution
Total momentum will be conserved. Initial momentum = Final momentumM.v=m×0+(M-m)v' ∴v'=MvM-m