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March 27, 2017

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The stopping distance of a car after the brakes are applied varies directly as the square of the speed r. If a car traveling 80 mph can stop in 360ft, how many feet will it take the same car to stoop when its traveling 50 mph?

  • math - ,

    d = k r^2
    360 = k (80)^2
    k = 360/80^2

    d = [360/80^2] * 50^2

    d = 360 (25/64)

    d = 141 ft

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