Answer:
Explanation:
The principle of energy conservation states that energy is transformed from one form to another, in this case, the potential energy will be transformed into kinetic energy. When the Rock is at the highest point, its potential energy is maximum and, as the rock falls, its potential energy decreases as it increases its kinetic energy, the kinetic energy will be maximum at the time that the rock hits the ground, the value of this energy is equal to that of the rock at the time it is located in the top of the mountain.
[tex]E_{p}=m*g*h\\E_{p}=1000*9.81*18\\E_{p}=176580[J] =E_{k}\\[/tex]
