Chapter 4, Problem 6Q

To determine

(a)Is force needed to make ball bounce back up when golf ball dropped to the pavement? (b)If yes, what exerts the force?

Answer to Problem 6Q

Solution:

(a)Yes, the force needed to make the ball bounce back up when golf ball dropped to the pavement.

(b)The pavement exerts the force on the golf ball.

Explanation of Solution

a)When the ball is dropped to the pavement, the ball exerts a force on the pavement.Due to this ball bounces up because the pavement exerts an equal and opposite normal force on the ball which makes it bounce upwards. This because of Newton’s third law of motion which states that for every action has an equal and opposite reaction. Hence, force is needed to bounce the ball back up, because the ball changes direction, so accelerates. If the ball accelerates, there must be a force.

(b)The pavement exerts the force on the golf ball. Pavement exerts an equal and opposite normal force on the ball which makes it bounce upwards according to Newton’s third law.