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 - Discussion Questions - Page 123: Q4.27

Answer

They are the same.

Work Step by Step

The two forces mentioned in the question, $\vec{F}_{T\;on\;C}$ and $\vec{F}_{C\;on\;T}$, are always equal in magnitude and opposite in direction. This is a statement of Newton’s third law. If the vehicles are moving faster before the collision, that just means that each of these forces will be larger, but they will still be equal to one another in magnitude.
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