I've been thinking a little now, and also looking for more information on the internet. I found this formula from two different sources:
V_{f} = eV_{ball} + (e+1)V_{bat}
where
V_{f} is the velocity of the ball after collision with bat
V_{ball} is the velocity of the ball before the collision...
All right. I was however surprised that the contact time didn't increase when the speed increased. I had expected that the more you deform the ball the longer is the contact time between ball and bat since the bat is "buried" deeper into the ball.
Hi. I am doing an investigation about some of the main elements of physics involved in a swedish sport called brannboll (think baseball, but instead of having a pitcher throw the ball at you, you throw it up in the air yourself prior to hitting it. Also, you use a wooden bat and a tennis ball)...