prove that kinectic energy of a freely falling object on raching the groind is nothing but the tranaformation of its initial potentional energy
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Total energy when it reaches the ground
= K.E + P.E = 0.5mv^2 +0
Velocity when it reaches the ground=
sqrt(2gh)
Substitute velocity in total energy
equation
Total energy when it reaches the ground
0.5mv 2 = 0.5m * 2gh = mgh
We found that total energy when it
reaches the ground = Total energy at
initial position.
In other words, kinetic energy with which
it hits the ground is the transformation of
its initial potential energy.
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