The hitter...
Usually because the ball hits in what you could call the weakest part of the bat. If the ball hits directly on a grain, or a weak part of a poorly made bat. the bat will crack. Also, the ball can break the bat at the handle, where the bat is thinnest, due to the massive amount of force the ball is traveling with as it comes in contact with the bat.
The force that is produced while swinging the bat and the throwing of the ball.
It is a strike.
Why would a baseball be hitting another baseball?
When a bat hits a Baseball the bat transfers momentum. Momentum is the force in a moving object, which can be passed on from one object to another.
The batter swinging the bat.
When a bat hits a Baseball the bat transfers momentum. Momentum is the force in a moving object, which can be passed on from one object to another.
The batter swinging the bat.
The force and strength of the blow of the baseball bat propels the baseball forward.
cricket
in most cases the bat
A double barreled bat is the same as a double walled bat. The barrel (the part where the ball hits the bat) contains a smaller barrel inside it's hollow compartment. This gives it more umph when the ball hits the bat because of the 'trampoline effect'.