Physics (10th Edition)

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

Chapter 2 - Kinematics in One Dimension - Problems: 16

Answer

a) -39 400 m/s b) -5.78 $\times 10^{-4}$ $m/s^{2}$

Work Step by Step

a) $\Delta$ v = v - u = -18.5 - 20.9 = -39.4 km/s = -39 400 m/s b) time in seconds = 2.16 years $\times$ 365 days/year $\times$ 24 hours/day $\times$ 60 min/hours $\times$ 60 sec/min $\approx$ 6.81 $\times$ $10^{7}$ seconds a = $\frac{\Delta v}{t}$ = $\frac{-39 4000}{68 100 000}$ $\approx$ -5.78 $\times 10^{-4}$ $m/s^{2}$
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