Answer
$\frac{W}{4}$
Work Step by Step
Work done in first case = change in kinetic energy =$\frac{1}{2}mv^{2}-0=W$
In the second case, work done =$\frac{1}{2}m(\frac{v}{2})^{2}-0=\frac{W}{4}$
Thus, work required =$\frac{W}{4}$
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: 9
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
