Physics (10th Edition)

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

Chapter 2 - Kinematics in One Dimension - Problems: 12

Answer

16 m/s due north

Work Step by Step

Let due north be the positive direction Let T = total time $x_{n}$ = $v_{n}$$t_{n}$ = (27)($\frac{3}{4}$T) = $\frac{81}{4}$T m $x_{s}$ = $v_{s}$$t_{s}$ = (-17)($\frac{1}{4}$T) = -$\frac{17}{4}$T m Average velocity = displacement / time = ($\frac{81}{4}$T - $\frac{17}{4}$T) / T = +16 m/s 16 m/s due north
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