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March 27, 2017

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A ball thrown horizontally at 22.3 m/s from the roof of a building lands 31.0 m from the base of the building. How high is the building?

  • physics - ,

    How long did it fly?
    went 31 m at 22.3 m/s
    t = 31/22.3 = 1.39 seconds

    h = (1/2) g t^2
    = 4.9 (1.39)^2
    = 9.47 meters

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