A) 6 m/s
B) 5 m/s
C) 3.6 m/s
D) 2.4 m/s
E) 1.2 m/s
Correct Answer: D
Solution :
From conservation of momentum. Momentum before collision = Momentum after collision \[{{m}_{1}}{{u}_{1}}+{{m}_{2}}{{u}_{2}}={{m}_{1}}{{v}_{1}}+{{m}_{2}}{{v}_{2}}\] \[\Rightarrow \] \[20\times 6=50v\] \[\Rightarrow \] \[v=\frac{120}{50}=2.4\,m/s\]
You need to login to perform this action.
You will be redirected in
3 sec
