University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 4 - Newton's Laws of Motion - Problems - Exercises - Page 126: 4.37

Answer

(a) The pitcher produced an average force of 153 N on the ball. (b) please refer to the free-body diagram

Work Step by Step

(a) We can find the ball's acceleration. $a = \frac{v^2-v_0^2}{2x} = \frac{(46~m/s)^2-0}{(2)(1.0~m)}$ $a = 1058~m/s^2$ We can use a force equation to find the force. $F = ma = (0.145~kg)(1058~m/s^2)$ $F = 153~N$ The pitcher produced an average force of 153 N on the ball. (b) please refer to the free-body diagram
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