A) \[100m{{s}^{-1}}\]
B) \[80m{{s}^{-1}}\]
C) \[120m{{s}^{-1}}\]
D) \[160m{{s}^{-1}}\]
Correct Answer: C
Solution :
Apply conservation of linear momentum. CM rises through height h, so its velocity after collision\[=\sqrt{2gh}\] \[0.01\times 400=2\times \sqrt{2gh}+0.01\times v\] ⇒ \[V=120m/s\]
You need to login to perform this action.
You will be redirected in
3 sec
