SOLUTION: The distance required to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many feet are required to

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The distance required to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many feet are required to       Log On


   

Question 807212: The distance required to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many
feet are required to stop a car traveling 96 miles per hour?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The distance required to stop a car varies directly as the square of its speed.
If 250 feet are required to stop a car traveling 60 miles per hour, how many
feet are required to stop a car traveling 96 miles per hour?
:
Let x = stopping distance a 96 mph
x%2F250 = 96%5E2%2F60%5E2
x%2F250 = 9216%2F3600
Cross multiply
3600x = 250 * 9216
x = 2304000%2F3600
x = 640 ft to stop at 96 mph