Ball Bounced Off His Face!

Well it's volleyball season now. It is quite different from basketball but at least I get to pound volleyballs into opponents faces. That is always fun. Actually that's what I want to talk about. The force at which a ball bounces off a person's face is greater than if a ball just hit someone's face and fell to the ground. If I were to bounce a ball off a person's face the mass of the ball times the speed of the ball hit plus the speed of the ball after it bounces is the momentum. A ball that just stops would only be the speed the ball was hit plus zero because the ball came to a stop. The ball that bounces has a greater change in momentum which also equates to a larger impulse. So if you see a ball bounce off someone's face you know that hurt way more than if a guy stopped a ball with his face.

Hmm Momentum...

So this has been a tough weekend/week for me. I was starting to get sick before the Basketball State Tournament but it has gotten worse since then. I may have also cracked a bone in my right foot and oh we lost to Kahuku in the semi-finals of the State Tournament. Now I want to talk a little about momentum because momentum was a key factor in our loss to Kahuku. The equation m1v1+m2v2=m1v1f+m2v2f is the equation that will explain the charging call I got against me as I went up for the shot that would tie the game. No momentum is lost in a system because what one object gains the other objects loses. So basically the overall change in momentum in a system should be zero. Now the system in our basketball game was me and the opponent. As I was driving into the basket I saw my opponent come over to take a charge against me so I came to a jump stop. His mass being more than mine as well as my decreaing speed was not enough to knock him over in my opinion. His advantage in weight and speed should have resulted in my movement going backwards instead of his. So what is the explaination to his falling down backwards. I might have to say he "flopped." I'm sure if I had the exact mathematics I could prove that I did not hit him with enough force to knock him backwards like the way he fell. If only the referee knew physics he might not have costed us the game.