Answer
$-26 ft/min$
Work Step by Step
We are given that the height on the way down is equal to height on the way up.
Now, the average vertical speed is equal to $\dfrac{-160 \times 30}{5}=-26 ft/min$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 7 - Trigonometry and Periodic Functions - 7.1 Introduction to Periodic Functions - Exercises and Problems for Section 7.1 - Exercises and Problems - Page 271: 21
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