In a thought experiment, a scientist devised a system in which an object fell from a higher point to a lower point above the ground with no friction. Which statement about this system is correct? The mechanical energy of the system at the beginning of the experiment is less than the mechanical energy of the system at the end of the experiment.

The mechanical energy of the system at the beginning of the experiment is equal to the mechanical energy of the system at the end of the experiment.

The total energy of the system was zero because there was no friction.

The mechanical energy of the system at the beginning of the experiment is greater than the mechanical energy of the system at the end of the experiment.