The SI unit for energy is the joule.
Joule
The official unit for any type of energy (not just mechanical energy) is the joule. The official unit for any power (not just electrical power) is the watt, equal to joules / second.
by adding the objects kinetic energy and potential energy
The 'ERG' is the standard unit for work or mechanical energy.
Mechanical energy is associated with the motion or position of an object. It can occur as potential energy or kinetic energy.
Joule -- a unit of electrical/mechanical/heat energy
Power; its SI unit is watt. Please note that this is notspecifically an electrical unit; "power", and the unit "watt", is the rate of energy conversion, and can be used anywhere where energy is converted - whether "work" is involved, or some other (non-mechanical) energy.
Joule -- a unit of electrical/mechanical/heat energy
If an object has kinetic energy, then almost BY DEFINITION it has mechanical energy. "Mechanical energy" is the sum of kinetic energy and potential energy.
Most of the devices that we use in society is a kind of mechanical energy. Mechanical energy is the energy of the other. Elevators. Convert electrical energy into mechanical. The car. Converted to mechanical energy is fossil. A bicycle. Muscular body converts energy to mechanical energy.
potiental energy
Motors convert electrical energy to mechanical energy. Generators transfer mechanical energy to electrical energy.