Answer
5 m/s
Work Step by Step
Applying formula (10) from the book:
$s(t)=v_{0} t+s_{0}+\frac{a}{2} t^{2}$
Solve to get:
$4 v_{0}+40=60$
$t=4, a=5, s_{0}=0, s(t)=60$
$
v_{0}=5$
Calculus, 10th Edition (Anton)
by Anton, Howard
Published by
Wiley
ISBN 10:
0-47064-772-8
ISBN 13:
978-0-47064-772-1
Chapter 4 - Integration - 4.7 Rectilinear Motion Revisited Using Integration - Exercises Set 4.7 - Page 330: 32
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