Question

when a body is projected vertically up from the ground is potential energy and kinetic energies at point P are in the ratio 2 is to 3 if the same body is projected vertically up with double the previous velocity at the same point is the ratio of kinetic energy and potential energy

Answer 1

$\frac{ {v}^{2} }{2gh} = 1.5 \\ \frac{ke}{pe} = {2}^{2} \times 1.5 = 6$
ratio of KE to PE is 6 when v is doubled

Answer 2

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