College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 5 - Work and Energy - Learning Path Questions and Exercises - Multiple Choice Questions: 3

Answer

(b)

Work Step by Step

Since the formula is $W=Fd\cos\theta$, work will be positive when force is positive and work will be negative when force will be negative. Therefore, the answer is (b).
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