College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 4 - Multiple-Choice Questions - Page 146: 3

Answer

The correct answer is: (e) at the 25-yd line, when the ball is at the top of its trajectory

Work Step by Step

The correct answer is: (e) at the 25-yd line, when the ball is at the top of its trajectory When the ball is moving through the air, the horizontal component of velocity remains constant. However, the magnitude of the vertical component of velocity decreases as the ball goes up. Therefore, the ball's speed decreases as the ball goes up. At the top of the trajectory, the vertical component of velocity is zero. This is when the speed of the ball is a minimum.
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