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Calculus

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A stone is dropped from the edge of a roof, and hits the ground with a velocity of -195 feet per second. How high is the roof? .

  • Calculus -

    v = at
    that gets you t

    d = 1/2 at^2

    that gets you the height

    or, d = v^2 / 2a
    You have v=-195, a=-32

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