College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 6 - Linear Momentum and Collisions - Learning Path Questions and Exercises - Multiple Choice Questions - Page 213: 10


(a) Internal forces do not affect conservation of momentum because they cancel each other out.

Work Step by Step

Internal forces, like gravity, electrical and magnetic, are equal and opposite, from the Newton's third law of motion. Therefore, they cancel each other and thus, do not effect the conservation of momentum.
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