Answer
$\approx24.559$ mph
Work Step by Step
Plugging in $R=5$ we get $5=0.00829s^2\\s^2=\frac{5}{0.00829}\\s=\pm\sqrt{\frac{5}{0.00829}}$
But $s$ must be non-negative, thus $s=\sqrt{\frac{5}{0.00829}}\approx24.559$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - 4.5 Solve Quadratic Equations by Finding Square Roots - 4.5 Exercises - Problem Solving - Page 271: 42a
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