Question

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

Answer 1

Correct Answer - C
In perfectly elastic collision between two bodies of equal masses, velocities and exchanged. So, after collision, particle A will move with `10ms^(-1)` and particle B with 16`ms^(-1)`