Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 7 - Kinetic Energy and Work - Questions: 2b

Answer

Situation (b) corresponds with plot 3.

Work Step by Step

Situation (b) has the force, opposite of the blocks motion, as the stronger force. This means that the block will eventually be slowed down to a velocity of zero, and the speed back up again in the opposite direction. The kinetic energy starts out decreasing, reaches zero, and then increases again.
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