Two equal masses `m_(1)` and `m_(2)` are moving along the same straight line with velocities `5ms^(-1)` and `-9 ms^(-1)` respectively. If the collision is elastic, then calculate the velocities after the collision of `m_(1)` and `m_(2)`, respectively

Options

A. `-4ms^(-1)and10ms^(-1)`
B. `10ms^(-1)and0ms^(-1)`
C. `-9ms^(-1)and5ms^(-1)`
D. `5ms^(-1)and1ms^(-1)`

Answer

C

Explanation

`-9ms^(-1)` Equal masses
and `5ms^(-1)` Interchange velocity