Two identical balls collide head on. The initial velocity of one is 0.75ms1 east,
while that of the other is 0.43ms-1 west. If the collision is perfectly elastic.
Determine the final velocity of each ball.
The first ball (initially moving eastward) rebounds with a final velocity of -0.43 m/s eastward. The second ball (initially moving westward) rebounds with a final velocity of 0.75 m/s westward.