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March 25, 2017

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A stone A is dropped from rest down a well, and in 1 s another stone B is dropped from rest. Determine the distance between the stones another second later.
The well is 80ft deep

  • physics - ,

    There is a special place in Hell for physics students who drop stones in wells. Wells don't need stones dropped in them, or the water level below bottom will decrease.


    Let t be the time of dropping the first stone.

    disance apart= distance first-distance2nd
    = 1/2 g t^2 - 1/2 g(t-1)^2
    so, at t=2
    = 1/2 g 4 - 1/2 g 1

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