Assuming the bat applies a fixed amount of force to the ball, what else can he do to increase its final velocity?
OA. place his hands closer to the center of the bat to increase the bat's momentum during the swing
OB. increase the amount of time the bat is applying force to the ball by following through with his swing
OC. stop swinging as soon as the ball hits the bat so the amount of friction against the ball is reduced
OD. place his hands closer to the end of the bat to decrease the bat's momentum during the swing

A heavier tennis racquet or baseball bat increases final ball velocity due to greater momentum. Following through with the swing increases time of force application, boosting ball velocity.

Explanation:

A more massive tennis racquet or baseball bat makes the ball fly off faster due to the increase in momentum from the larger mass, which results in a higher final velocity for the ball. When hitting a ball, increasing the amount of time the bat is applying force to the ball by following through with the swing enhances the velocity change of the ball, leading to a higher final velocity. This is due to the prolonged contact time during the collision.

Learn more about Impact of mass and follow-through on final ball velocity here:

https://brainly.com/question/24694497