SOLUTION: The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is r
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Question 999502: The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 55 miles per hour?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 55 miles per hour?
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d = k*s^2
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112 = k*40^2
k = 112/1600 = 0.07
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Equation:
d = 0.07*s^2
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What distance is required for a speed of 55 miles per hour?
d = 0.7*55^2 = 211.75 ft
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Cheers,
Stan H.
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