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