Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 7 - Think and Explain: 55

Answer

Stopping a truck when it's lightly loaded is easier because it has less KE compared to when it has a massive load. The work required is the change in KE, and this is less when there is less mass.
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