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 6 - Dynamics I: Motion Along a Line - Conceptual Questions - Page 160: 18

Answer

$ a_e > a_a=a_b >a_c=a_d$

Work Step by Step

Gravitational acceleration is independent of mass. For (e) gravity and resistance due to air are in same direction so magnitude will be maximum. For (a), (b), (c) and (d) gravity resistivity are in opposite direction. Since resistance is proportional to velocity so it will be maximum for (c) and (d) and thus decreasing their magnitude of net acceleration. Thus order will be $ a_e > a_a=a_b >a_c=a_d$
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