Work out in detail the situation in which a moving all collides with a stationary ball in a totally elastic collision. Assume the balls have the same mass when doing this calculation. How does conservation of momentum show itself in this situation? p = mv F = ma p1i + p2i = p1f + p2f I assume the ball in motion stops and the ball at rest assumes the total velocity? Don't know how to describe this mathematically. Don't really understand how to explain it verbally either. Just remember it from good ole' marbles.