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: 2

Answer

(a) first interval: $v_{ave} = -200 ~m/min$ second interval: $v_{ave} = 333 ~m/min$ (b) $v_{ave} = 120 ~m/min$

Work Step by Step

(a) first interval: $v_{ave}=\frac{\Delta ~s}{\Delta ~t}$ $v_{ave} = \frac{−400 ~m}{2~min}$ $v_{ave} = −200 ~m/min$ second interval: $v_{ave}=\frac{\Delta ~s}{\Delta ~t}$ $v_{ave} = \frac{1000 ~m}{3~min}$ $v_{ave} = 333 ~m/min$ (b) $v_{ave}=\frac{\Delta ~s}{\Delta ~t}$ $v_{ave} = \frac{600 ~m}{5~min}$ $v_{ave} = 120 ~m/min$
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