   Chapter 4, Problem 2P

Chapter
Section
Textbook Problem

A football punter accelerates a football from rest to a speed of 10 m/s during the time in which his toe is in contact with the ball (about 0.20 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball?

To determine
The average force exerted by the punter on the football.

Explanation

Given info: The speed of the ball is 10 m/s, time duration is 0.20 s.

Explanation:

The formula to calculate the acceleration of the ball is,

a=ΔvΔt

Here,

Δv is change in velocity

Δt is time duration

Substitute 10 m/s for Δv and 0.20 s for Δt to find a.

a=10m/s0.2s=50ms2 (1)

Thus, the acceleration of the ball (a) is 50ms2

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