posted by Jonny .
Consider a perfectly elastic collision between two objects of equal mass. Object 1 is initially moving with a velocity v = 4.33 m/s while object 2 is at rest. What are the final velocities after the collision? Enter the final velocity of object 1 first.
The velocities are switched in this equal-mass elastic case.
Object 1: 0
Object 2: 4.33 m/s
It is obvious from inspection that both total momentum and kineticenergy are conserved.
This can be proven with simultaneous momentum and energy equations, and I recommend that you try to prove it that way.