Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 6 - Work and Energy - Misconceptual Questions: 6


Choice E.

Work Step by Step

If air resistance is neglected, the ball’s mechanical energy doesn’t change, i.e., it is conserved. Initially the kinetic energy is a maximum, and as it rises, some is converted to gravitational potential energy. At the top, the ball’s gravitational potential energy is a maximum and the KE is zero. As the ball falls, the potential energy is converted back into KE. Though the form changes, the total energy remains constant.
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