SOLUTION: The stopping distance d of a car after the breaks are applied varies directly as the square of the speed r. If a car traveling 80mph can stop in 360ft, how many feet will it take t

SOLUTION: The stopping distance d of a car after the breaks are applied varies directly as the square of the speed r. If a car traveling 80mph can stop in 360ft, how many feet will it take t

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Question 452142: The stopping distance d of a car after the breaks are applied varies directly as the square of the speed r. If a car traveling 80mph can stop in 360ft, how many feet will it take the same car to stop when it is traveling 20mph?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
360/(80)2=x/(20)2
360x400=6400x
x=360x400/6400=22.5 ft..
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