A 12 kg rock falls from a 30 m cliff. What is the kinetic and potential energy when the rock has fallen 15 m?
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Answer:
the formula of potential energy is =mgh i.e mass x acceleration due to gravity x height
while kinetic energy =1/2mv². where m is mass and v is velocity
Explanation:
so for potential energy
mgh = 12kg * 10m/s * 30m= 9600J
and for kinetic energy
1/2mv²=
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