SOLUTION: The formula v = sq. rt. 2.5r, can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in

Algebra ->  Square-cubic-other-roots -> SOLUTION: The formula v = sq. rt. 2.5r, can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in      Log On


   

Question 1174201: The formula v = sq. rt. 2.5r, can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in feet. To the nearest whole number, find the radius of curvature if the maximum safe velocity is 35 miles per hour.
Answer by ikleyn(52866) About Me  (Show Source):
You can put this solution on YOUR website!
.

The equation is


    v = sqrt%282.5r%29.


Square both sides 


    v^2 = 2.5r


and express "r"


    r = v%5E2%2F2.5.


Now substitute v = 35 mph to the formula (1) and compute the radius.


At the end, round properly.