Question

A stone projected vertically upwards from the ground reaches a maximum height h. When it is at a height
3h/4, the ratio of its kinetic and potential energies???
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Answer 1

If it reaches height h, that means it was projected with initial kinetic energy equal to mgh

At height 3h/4, Potential energy= 3mgh/4

Kinetic energy = mgh- 3mgh/4 = mgh/4

Ratio of kinetic to potential energy = 1/3

Explanation: