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

by Knight, Randall D.

Published by Pearson

ISBN 10: 0133942651

ISBN 13: 978-0-13394-265-1

Chapter 9 - Work and Kinetic Energy - Stop to Think 9.1 - Page 210: 1

Answer

a. the car

Work Step by Step

By using the formula for kinetic energy ($ 0.5mv^2$) we get: 200,000 J for the car and 100,000 J for the truck. Therefore, the car has a larger kinetic energy.

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