125 = 45/(0.4+m)
0.4+m = 45/125
m = 45/125 - 0.4
m = -0.04
If a car is traveling downhill at 45 miles per hour on dry pavement, then the braking distance B is
B = 45/(0.4+m), where m<0 is the slope of the road.
Find the slope of the road if the braking distance is 125 feet.
1 answer