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: Q5.11

Answer

You could not perform actions a, c, or e.

Work Step by Step

Driving around an unbanked highway curve requires a horizontal centripetal force, which would not be present in a world without friction. To start walking on a horizontal sidewalk also requires a horizontal force, or to change lanes on a level road. Jumping straight up in the air or climbing a vertical ladder can be performed (carefully) without friction.
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