Two perfectly elastic particles `A` and `B` of equal masses travelling along a line joining them with velocities `15 m//s` and `10m//s` respectively collide. Their velocities after the elastic collision will be (in m/s) respectively

Options

A. `10 ms^(-1), 10 ms^(-1)`
B. `15 ms^(-1), 15 ms^(-2)`
C. `10 ms^(-1), 15 ms^(-1)`
D. `15 ms^(-1), 10 ms^(-1)`

Answer

C

Explanation

In perfectly elastic collision between two bodies of equal masses, velocities are exchanged. So, after collision, particle A will move with `10 ms^(-1)` and particle B with `15 ms^(-1)`