College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 5 - Work and Energy - Learning Path Questions and Exercises - Conceptual Questions - Page 173: 15

Answer

Mechanical energy remains same. So, potential energy remains same as long as the height remains same. Hence, the kinetic energy will not also alter, because no external force is not given to the ball. So, if the student does not move, the ball would not hit the student's nose.

Work Step by Step

Mechanical energy remains same. So, potential energy remains same as long as the height remains same. Hence, the kinetic energy will not also alter, because no external force is not given to the ball. So, if the student does not move, the ball would not hit the student's nose.
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