I'm no student of physics but isn't there one that says something like: "a body in motion tends to stay in motion unless acted upon by an outside force"?

This would describe one of the best no-touch throws I've seen. It was during a major league baseball game. The pitcher hit the batter with the ball the batter rushed the pitcher and tried to punch him in the head. Just when the punch should have connected the pitcher ducked and the batter went tumbling down the back of the pitcher's mound.

Bronson