Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 2 - Describing Motion: Kinematics in One Dimension - Problems: 21

Answer

a) 21.17 m/s b) 2 m/s

Work Step by Step

a) $v_{average}$ = $\frac{385m-25m}{20s-3s}=21.17 m/s$ b) $a_{average}$ = $\frac{45m/s-11m/s}{20s-3s}=2m/s$
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