Question

Two identical balls A and B having velocities of
0.5 m/s and -0.3 m/s respectively collide
elastically in one dimension. The velocities of B
and A after the collision respectively will be
​

Answer 1

Answer:

Given that the balls collide elastically. This means that the net linear momentum is conserved. Therefore we can solve this problem by applying the concept of Conservation of Linear Momentum.

According to Conservation of Linear Momentum,

Initial Momentum = Final Momentum

Since the Elastic Collision is in 1 Dimension, the velocities just get interchanged after collision. Hence the Final Velocity of Ball A would be Initial Velocity of Ball B and Final Velocity of B would be Initial Velocity of A.

Therefore Velocity of A after Collision = -0.3 m/s and that of B = 0.5 m/s,