Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 8 - Potential Energy and Conservation of Energy - Conceptual Questions - Page 244: 12

Answer

Please see the work below.

Work Step by Step

We know that if the air resistance is not ignored, the mechanical energy E decreases with time because some of the energy is converted into heat while the ball comes into contact with the air and thus the the total amount of mechanical energy decreases.
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