Answer
$6.88m/s^{2}$
Work Step by Step
$60 mi/hr = 60\times\frac{1609m}{3600s}=26.82m/s$
So, average acceleration = $\frac{26.82m/s}{3.9s}=6.88m/s^{2}$
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 2 - Kinematics: Description of Motion - Learning Path Questions and Exercises - Exercises - Page 61: 24
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