Answer
(a) object of mass $4m$ and speed $v$.
Work Step by Step
Kinetic energy for a body with mass $m$ and speed $v$ is given by $\frac{1}{2}mv^2$.
The object in option (a) of mass $4m$ and speed $v$ has the least kinetic energy of $2mv^2$.
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
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 - Multiple Choice Questions - Page 172: 10
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