Question

The formula s=3.87square root fr can be used to estimate a cars speed in miles per hour where f is the coefficient of friction and r is the radius of the circle in feet if f =0.7 estimate the cars speed in part A round to the nearest hundredth

Answer 1

s = 3.238√f

Explanation:

The only way this question can be solved is in terms of r because its value is not given.

Given that

s = 3.87√rf

f = 0.7

Required

Find s

Substitute 0.7 for f

s = 3.87 * √(0.7 * f)

Split square root

s = 3.87 * √0.7 * √f

s = 3.87 * 0.837 * √f

s = 3.238√f

This is as far as it can be solved.

Substitute whatever the value of f is, to get your complete answer