Answer
The action and reaction forces are:
1)
The force exerted by the bat on the ball, which changes the momentum of the ball.
2)
The force exerted by the ball on bat, which slows down the swing of the bat.
Work Step by Step
The two forces are:
The force exerted by the bat on the ball, which changes the momentum of the ball.
And:
The force exerted by the ball on bat, which slows down the swing of the bat.
