Conceptual Physics (12th Edition)

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

Chapter 4 - Think and Discuss: 109

Answer

When you make a sudden stop, your velocity changes in a short time interval, which means a large acceleration. By Newton’s second law, this requires a large net force. Experiencing that force is what hurts you.
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