Physics (10th Edition)

Published by Wiley
ISBN 10: 1118486897
ISBN 13: 978-1-11848-689-4

Chapter 2 - Kinematics in One Dimension - Problems - Page 48: 18

Answer

a) + 2.8 m/s b) + 2.8 m/s

Work Step by Step

v = u + at a) v = u + at = (0) + (2.3)(1.2) = 2.76 $\approx$ +2.8 m/s b) v = u + at = (2.76) + (0)t = 2.76 $\approx$ +2.8 m/s Since acceleration is 0 after 1.2 s, the velocity remains constant
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