# Question: Compare two different situations in which a ball and hard

Compare two different situations in which a ball and hard surface exert forces on one another. First, a putty ball is placed gently on the floor and left at rest. Then it is dropped from a height of 2.00 m and comes to rest without a bounce, leaving a 1.15-cm-deep dent in the putty.

(a) In which case does the ball exert more force on the floor? In which case is it most likely to dent the floor? Explain.

(b) Calculate the force exerted by the ball on the floor (in terms of its weight w) in the first case.

(c) Deter-mine the average acceleration of the ball and the average force exerted by the ball on the floor (in terms of the ball’s weight w) in the second case.

(a) In which case does the ball exert more force on the floor? In which case is it most likely to dent the floor? Explain.

(b) Calculate the force exerted by the ball on the floor (in terms of its weight w) in the first case.

(c) Deter-mine the average acceleration of the ball and the average force exerted by the ball on the floor (in terms of the ball’s weight w) in the second case.

## Relevant Questions

A hockey puck impacts a goalie’s plastic mask horizontally at and rebounds horizontally off the mask at 47 mi/h. If the puck has a mass of 170 g and it is in contact with the mask for 25 ms, (a) What is the average force ...The engines of most rockets produce a constant thrust (forward force). However, when a rocket is fired, its acceleration increases with time as the engine continues to operate. Is this situation a violation of Newton’s ...Shown in Fig. 4.31 are the front and rear wings of an Indy racing car. These wings generate down force, which is the vertical downward force produced by the air moving over the car. Why is such a down force desired? An Indy ...A student weighing 600 N crouches on a scale and suddenly springs vertically upward. Will the scale read more or less than 600 N just before the student leaves the scale? In a college homecoming competition, eighteen students lift a sports car. While holding the car off the ground, each student exerts an upward force of 400 N. (a) What is the mass of the car in kilograms? (b) What is its ...Post your question