Need help figuring out how to work this; The formula v = 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 30

Question

Need help figuring out how to work this; The formula v = 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 30

anonymous · Answer

square root of 2.5 r and the answer is 360ft. Just not sure how to work it.

whpalmer4 · Answer

$$v = \sqrt{2.5r}$$Solve for $r$
$$v^2=2.5r$$$$r=\frac{v^2}{2.5}$$$$r=\frac{30^2}{2.5}=$$

anonymous · Answer

Thank you, makes more sense now!