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March 25, 2017

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An object is dropped from a height of 49 meters. The object takes 3.2s to hit the ground. The final velocity of the object when it hits the ground is -31 m/s

  • Applied Physics - ,

    d = -(1/2) g t^2
    -49 = -(1/2)(9.8)t^2
    t^2 = 10
    t = 3.16 seconds

    v = -gt = -9.8*3.16 = -31 m/s

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