Which of the following describes Mechanical Energy?

Mechanical energy is the sum of potential energy and kinetic energy in an object. It is related to the motion and position of an object. The option that indicates energy created when materials create friction pertains to the conversion of mechanical energy. When objects slide against each other, they produce friction, which can convert kinetic energy into other forms of energy, such as thermal energy.

This concept is essential in understanding how mechanical systems work, as it illustrates the transformation and transfer of energy within physical processes. In practical applications, recognizing how mechanical energy is affected by friction helps in troubleshooting mechanical systems, improving efficiency in machines, and understanding energy loss in various scenarios.

The other options describe different forms of energy but do not pertain to the definition of mechanical energy. Light energy refers to electromagnetic radiation, chemical energy relates to the energy stored in molecular bonds, and energy released during combustion is often thermal energy, but none directly represent the mechanical aspect defined in the correct answer.