Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 2 - Kinematics in One Dimension - Exercises and Problems: 4

Answer

At t = 10 s: v = 1.25 m/s At t = 25 s: v = 0 At t = 35 s: v = −5.0 m/s

Work Step by Step

The velocity is the slope of the position versus time graph. At t = 10 s: $v = \frac{25 ~m}{20 ~s} = 1.25 ~m/s$ At t = 25 s: v = 0 At t = 35 s: $v = \frac{−50~m}{10~s} = −5.0~m/s$
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