A) \[\frac{Mv}{M-m}\]
B) \[v\]
C) \[\frac{Mv}{m}\]
D) \[\frac{M-m}{m}v\]
Correct Answer: A
Solution :
By the principle of conservation of linear momentum, \[Mv=m{{v}_{1}}+m{{v}_{2}}\]Þ\[Mv=0+(M-m){{v}_{2}}\]Þ\[{{v}_{2}}=\frac{Mv}{M-m}\]
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