Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 9 - For Thought and Discussion: 12

Answer

The impulse is the difference.

Work Step by Step

The pitcher can only throw the ball as fast as his hand is moving. However, when the bat is in contact with the ball, it can exert a very large change in momentum in a very small time. This corresponds to a very large force, allowing the ball to travel faster than the bat is moving.
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