Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 6 - Dynamics I: Motion Along a Line - Exercises and Problems - Page 157: 64

Answer

yes Bob will be in jail

Work Step by Step

Distance travelled during reaction time $S_1 = 50*0.6 = 30m$ distance travelled after applying brakes $2aS_2 = v^2 -u^2$ $2*(-10) *S_2 = 0 - (50)^2$ $20S_2 = 2500$ $S_2 = 125m$ total distance travelled by Bob is $S_1+S_2 = 30m +125m =155$ since distance travelled is greater than distance to nail strip, he will will caught and will be in jail.
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