College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.10 - Modeling Variation - 1.10 Exercises - Page 165: 44

Answer

a) $F=kw s^2/r$ b) $48~mi/hr$

Work Step by Step

a) According to the exercise, we have the equation: $F=kw s^2/r$ for some constant $k$. b) We plug in the given values to obtain: $k(1600)(60)^2/r=k(2500)s^2/r\\s^2=2304\\s=\sqrt{2304}=48~mi/hr$
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