A tennis player hits the ball with her racket. Compare the force exerted by the racket on the ball to that exerted by the ball on the racket during the collision between the racket and the ball. Which of the following is correct?

A. The force exerted by the racket on the ball is bigger than the force exerted by the ball to the racket.

B. The two forces are equal and opposite only at the moment when the ball begins to contact the racket.

C. The two forces are equal and opposite only at the moment right before the ball leaves the racket.

D. The two forces are equal and opposite at all the times the ball

A tennis player hits the ball with her racket. The force exerted by the racket on the ball to that exerted by the ball on the racket during the collision exert equal force all the times. It is due to Newton's third law of motion. It states that the force acting from object 1 to object 2 is equal to the force acting on object 2 to object A but the force is in opposite direction.

Hence, the correct option is (D).