University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 4 - Newton's Laws of Motion - Problems - Exercises - Page 128: 4.58

Answer

Choice A.

Work Step by Step

Apply Newton’s third law. The two forces $\vec{F}_{head\;on\;neck}$ and $\vec{F}_{neck\;on\;head}$ are always equal in magnitude and opposite in direction. This is a statement of Newton’s third law. These two forces form an action-reaction pair.
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