A stone falling from the top of a vertical tower has descended xm when another is let to fall from a point y m below the top. If they fall from rest and reach ground together, find the height of the tower. (Answer isn't (x+y)^2/4x)
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A stone falling from the top of a vertical lower has descended x metre when another is dropped from a point y metre, below the top. If they fall from rest and reach the ground together, show that the height of the tower is 4x(x+y)2m.
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