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math

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The height, in feet, of a free]falling object t seconds after being dropped from an initial height s can be found using the function h = ]16t2 + s. An object is dropped from a helicopter 784 feet above the ground. How long will it take the object to land on the ground?

  • math - ,

    0 at ground = - 16 t^2 + 784

    so
    t^2 = 784
    t = sqrt (784)

  • typo - ,

    0 at ground = - 16 t^2 + 784

    so
    t^2 = 784 / 16
    t = sqrt (784 / 16)

  • math - ,

    49

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