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: 16

Answer

By conservation of energy, Potential Energy + Kinetic Energy = constant. Height is same considering the point of release and point at which the hand receives the object is same, Potential energy is same. It implies Kinetic energy is also same. Hence, the speed will be same, as Kinetic energy is proportional to $(velocity)^{2}$.

Work Step by Step

By conservation of energy, Potential Energy + Kinetic Energy = constant. Height is same considering the point of release and point at which the hand receives the object is same, Potential energy is same. It implies Kinetic energy is also same. Hence, the speed will be same, as Kinetic energy is proportional to $(velocity)^{2}$.
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