A) v
B) \[v/3\]
C) \[v/2\]
D) zero
Correct Answer: C
Solution :
[c] Let mass of each body be m. Their motion is represented as shown in figure. |
The velocity of centre of mass is |
\[{{V}_{CM}}=\frac{{{m}_{1}}{{v}_{1}}+{{m}_{2}}{{v}_{2}}}{{{m}_{1}}+{{m}_{2}}}\] |
\[\Rightarrow \] \[{{V}_{CM}}=\frac{m\times 2v-mv}{m+m}=\frac{v}{2}\] (the direction |
of motion of first particle is taken as positive) |
So, velocity of centre of mass of the system is v in the direction of motion of particle having larger speed. |
You need to login to perform this action.
You will be redirected in
3 sec