Answer
21.6 km/s
Work Step by Step
$\sqrt (18.3^{2}+11.5^{2})$
= $\sqrt (467.14)$
$\approx$ 21.6 km/s
Physics (10th Edition)
by Young, David; Stadler, Shane
Published by
Wiley
ISBN 10:
1118486897
ISBN 13:
978-1-11848-689-4
Chapter 3 - Kinematics in Two Dimensions - Problems - Page 73: 2
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