University Physics with Modern Physics (14th Edition)

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

Chapter 5 - Applying Newton's Laws - Problems - Discussion Questions - Page 159: Q5.9


The crate’s acceleration when going up the ramp has greater magnitude.

Work Step by Step

Gravity has a component pointing downhill. When the crate is moving uphill, the force of kinetic friction also points downhill. The force directed downhill is greater than in the case when the crate is sliding downhill (for then the force of kinetic friction opposes gravity).
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