An object of mass $10 \ kg$ is made to fall freely from a height of $10 \ m$. Complete the table:
Height of object $(m)$ $PE$ $(J)$ $KE$ $(J)$ Mechanical Energy $(J)$
$10$ ... ... ...
$8$ ... ... ...
$5$ ... ... ...
Just above ground ... ... ...

Hence,state the law of conservation of energy.

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(N/A) Given: Mass $(m) = 10 \ kg$,Height $(h) = 10 \ m$,Acceleration due to gravity $(g) = 10 \ m/s^2$.
Potential Energy $(PE) = mgh$,Kinetic Energy $(KE) = \frac{1}{2}mv^2$,Mechanical Energy $(ME) = PE + KE$.
Height $(m)$ $PE$ $(J)$ $KE$ $(J)$ $ME$ $(J)$
$10$ $1000$ $0$ $1000$
$8$ $800$ $200$ $1000$
$5$ $500$ $500$ $1000$
$0$ $0$ $1000$ $1000$

Law of Conservation of Energy: Energy can neither be created nor destroyed; it can only be transformed from one form to another. The total energy in an isolated system remains constant.

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