In physics, it is a quantity observed implicitly that comes in different forms such as kinetic, potential or radiant. It is always a necessary requirement for mechanical work.
Energy is measured in joule which is equal to a unit of force times a unit of length. Energy is also equivalent to a unit of mass times a unit of velocity squared.
Forms of Energy
Below is a list of some forms of energy
Energy can be transform into other forms and at different efficiencies. Things that transform them are called transducers.