What type of energy is created by friction?

The energy created by friction is classified as thermal energy. When two surfaces rub against each other, the friction between them causes molecules to vibrate more, resulting in an increase in temperature. This process converts kinetic energy, which was present due to the movement of the objects, into thermal energy as heat is produced.

To put it in context, while mechanical energy refers to the energy associated with the motion or position of an object, it is specifically the friction that converts some of that energy into thermal energy. Kinetic energy relates to the movement of an object, while potential energy is related to the position or state of an object rather than the energy produced by friction. Therefore, thermal energy is the correct answer as it directly results from the frictional interactions. This understanding is crucial for applications in fire safety and prevention, as friction can lead to heat generation, potentially causing fires if not managed correctly.