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. `-9 ms^(-1) "and" 5 ms^(-1)`
B. `-4 ms^(-1) "and" 10 ms^(-1)`
C. `10 ms^(-1) "and" 0 ms^(-1)`
D. `5 ms^(-1) "and" 1 ms^(-1)`

Answer

A

Explanation

When bodies has the same mass, (i.e. `m_1 = m_2`) Collide after the collision their velocities are exchanged.