When a baseball bat hits the ball, the impulse delivered to the ball is increased by
is it "follow through"??
maybe higher bat speed ?
No, the impulse delivered to the ball is not increased by the "follow through" when a baseball bat hits the ball. The follow-through refers to the continuation of the bat's motion after contact with the ball.
The impulse delivered to the ball is primarily determined by the force applied to it and the duration of contact between the bat and the ball. To increase the impulse, you need to either increase the force applied to the ball or increase the duration of contact.
Typically, a harder swing will result in a greater force being applied to the ball, which in turn increases the impulse delivered. Additionally, making contact with the ball for a longer period of time will also increase the impulse. This can be achieved by hitting the ball with a "sweeter spot" on the bat, where contact is made closer to the center of percussion.
So, while the follow-through can contribute to the force and duration of contact, it is not the primary factor that increases the impulse delivered to the ball when a baseball bat hits it.