Fundamentals of Physics Extended (10th Edition)

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

Chapter 8 - Potential Energy and Conservation of Energy - Questions - Page 200: 2f

Answer

The particle has the least speed in region DE.

Work Step by Step

Total mechanical energy does not change, it is just shifted. When potential energy is high, kinetic energy is low. When added together the total will always be 8J. Out of the 3 regions, DE has the highest potential energy so it must have the least kinetic energy. Kinetic energy is directly related to velocity, so DE must also have the lowest speed.
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