Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 7 - Linear Momentum - Problems: 15

Answer

2230 N.

Work Step by Step

Let the direction from the batter to the pitcher be the positive direction. Calculate the constant force from the ball’s change in momentum, equation 7-4. $$F=m\frac{\Delta v}{\Delta t}=(0.145 kg)\frac{46.0 m/s – (-31.0 m/s)}{5.00 \times 10^-3 s}=2230 N$$ The answer is rounded to 3 significant figures.
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