calculus

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With waht speed must a baseball be thrown upward from the ground in order to reach the top of the Washington Monment? (The top of the monument is 55o ft)

  • calculus -

    Well, we would have to ignore air resistance which would have a major effect here but (using english units because you used feet):

    v = Vo - 32 t
    v = 0 at top
    Vo = 32 t

    h = 0 + Vo t - 16 t^2

    550 = 32 t^2 - 16 t^2 = 16 t^2
    t^2 = 34.4
    t = 5.86 seconds
    Vo = 32 t = 187 feet/second

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