SOLUTION: Hello' The stopping distance d of a car after the brakes are applied varies directly as the square speed r? if a car traveling 70 mph can stop in 270 feet how many feet will it tak
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Question 339685: Hello' The stopping distance d of a car after the brakes are applied varies directly as the square speed r? if a car traveling 70 mph can stop in 270 feet how many feet will it take the same car to stop when it is traveling 80 mph? Thank you Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 70^2/270=80^2/X
4,900/270=6,400/X CROSS MULTIPLY.
4,900X=270*6,400
4,900X=1,728,000
X=1.728,000/4,900
X=352.653 FT. ANS.
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