Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 2 - Kinematics in One Dimension - Exercises and Problems: 37

Answer

Particle A v = -10 m/s Particle B v = -20 m/s Particle C v = 95 m/s

Work Step by Step

Particle A: The velocity will be equal to the slope of the position versus time graph; $v = \frac{-60~m}{6~s}$ $v = -10~m/s$ Particle B: We can read the velocity directly from the graph; $v = -20~m/s$ Particle C: The change of velocity will be equal to the area under the acceleration versus time graph; $\Delta v = 85~m/s$ $v = v_0+\Delta v$ $v = 10~m/s + 85~m/s$ $v = 95~m/s$
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