Kinetic energy is scalar; it does not have direction. Unlike velocity, acceleration , force, and momentum, the kinetic energy of an object is completely described by magnitude alone.
Gravitational potential energy is the energy stored in an object as the result of its vertical position or height.
Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing.
Conservation of energy
Energy can be defined as the capacity for doing work. It may exist in a variety of forms and may be transformed from one type of energy to another. However, these energy transformations are constrained by a fundamental principle, the Conservation of Energy principle. One way to state this principle is "Energy can neither be created nor destroyed". Another approach is to say that the total energy of an isolated system remains constant.