Question

what is elastic collision between two bodies?In one dimensional motion calculate the velocities of the bodies after the collision .what happens to their velocities after elastic collision when both the bodies are of equal mass ?

Answer 1

During elastic collision the kinetic energy of the system of particles is conserved. Velocity of approach =, velocity of separation. If the bodies are of equal mass their velocity gets exchanged. To calculate the velocities after collision we can use the above equation and conservation of momentum to have two equation for two variables (final velocities of the two)