Q2 / 105 · NTA Abhyas (JEE Main) 2020 · Physics · Center of Mass Momentum and Collision
Consider a horizontal surface moving vertically upward with velocity . A small ball of mass is moving with velocity If the coefficient of restitution and coefficient of friction are and respectively, find the horizontal velocity (in ) of the ball after the collision.


Correct answer: 0
Solution
The relative velocity of the particle with respect to the surface, along the normal, is the approach speed of the particle.
The separation velocity will be
Hence, the correct answer is 0.