Answer
18 meters per second
Work Step by Step
We first find the period:
$T = \frac{1}{f}=\frac{1}{.45}=2.22 \ s$
We now find the speed:
$ v = \frac{d}{T} = \frac{40}{2.22}=\fbox {18 meters per second.}$
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 13 - Exercises and Problems - Page 239: 39
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