Answer
$v_1\approx 11$ m/s, $v_2\approx 24$ m/s
Work Step by Step
At $t=4s$, the slope is approximately $44 m/4s=11 m/s$.
At $t=8 s$, the slope is approximately $96 m/4s=24 m/s$.
Calculus, 10th Edition (Anton)
by Anton, Howard
Published by
Wiley
ISBN 10:
0-47064-772-8
ISBN 13:
978-0-47064-772-1
Chapter 2 - The Derivative - 2.1 Tangent Lines And Rates Of Change - Exercises Set 2.1 - Page 120: 2
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