A) 0.5
B) 0.25
C) 0.4
D) 0.8
Correct Answer: B
Solution :
According to law of conservation of linear momentum, \[\operatorname{mv}+ 4m \times 0 = 4\,mv+ 0 \Rightarrow \,\,v'=\frac{\nu }{4}\] \[e=\frac{Relative\text{ }velocity\text{ }of\text{ }separation}{Relative\text{ }velocity\text{ }of\text{ }approach}=\frac{\frac{v}{4}}{v}\] or, \[e=\frac{1}{4}=0.25\]You need to login to perform this action.
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