Question

engineers use the formula d=0.05r^2+1.1r to estimate the minimum stopping distance( d) in feet for a vehicle traveling r miles per hour

if a car was traveling 50 mph what would be the distance it would take for the car to stop

Answer 1

The formula to estimate the minimum stopping distance( d) in feet for a vehicle traveling r miles per hour is given by:

$d=0.05r^{2}+1.1r$

Now we have to find the distance covered by the car while it was travelling at the rate of 50 miles per hour.

So in order to find that distance we have to plug the value of rate (r) as 50 miles per hour in the formula given to us.

Plugging r as 50 in the formula , we have

$d=0.05(50)^{2}+1.1(50)$

$d=125+55$

d=180 miles

Answer: The distance covered by the car for the car to stop, travelling at 50 miles per hour is 180 miles.