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. 0, 25
B. 5, 25
C. 10, 15
D. 20, 5

Answer

C

Explanation

For a collision between two identical perfectly elastic particles of equal mass, velocities after collision get interchanged.