March 28, 2017

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A falling stone takes 0.320 s to pass a window 2.30 m high. From what height (in meters) above the top of the window did the stone fall?

  • physics - ,

    Let that distance be H.

    Time to reach top of window:
    t1 = sqrt(2 H/g)

    Time to reach bottom of window:
    t2 = sqrt([2(H+2.3)/g]
    t2 - t1 = 0.32 = sqrt[2(H+2.3)/g] -sqrt(2H/g)

    g = 9.8 m/s^2. You have only one unknown. Solve for H

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