## Physics (10th Edition)

Published by Wiley

# Chapter 2 - Kinematics in One Dimension - Problems: 17

#### 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

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