Answer
a) 4.0 s
b) 4.0 s
Work Step by Step
v = u + at
t = $\frac{v-u}{a}$
a)
time
= $\frac{31-21}{2.5}$
= 4.0 s
b)
time
= $\frac{61-51}{2.5}$
= 4.0 s
Physics (10th Edition)
by Young, David; Stadler, Shane
Published by
Wiley
ISBN 10:
1118486897
ISBN 13:
978-1-11848-689-4
Chapter 2 - Kinematics in One Dimension - Problems - Page 48: 17
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