Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 7 - Work and Kinetic Energy - Conceptual Questions - Page 210: 3

Answer

True

Work Step by Step

The given statement is true because the force should have a non-zero component along the direction of motion; otherwise there will be no work done. Mathematically, $W=Fdcos\theta$ and if $\theta =90^{\circ}$ then $W=Fdcos90^{\circ}=Fd(0)=0$
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