Answer
Zero work
Work Step by Step
Work is done only when the force and displacement are parallel. If you vertically carry a backpack across campus, force and displacement are perpendicular to each other, not parallel. Thus, no work is done.
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
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 - Conceptual Questions - Page 173: 2
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