EVERYDAY SCIENCE

Detailed explanation-1: -When the force of friction acts on the object in the system frequently, some kinetic energy is converted to thermal energy because of friction.

Detailed explanation-2: -Explanation: When an object is moving(other than in vacuum) and possesses K.E., it experiences frictional force and resistance from the surface it is in contact with or simply the air. This results in heat being produced, which is thermal energy.

Detailed explanation-3: -Friction is an everyday force that is created by two surfaces interacting. When these surfaces slide against each other, this interaction increases the thermal energy of the two surfaces (the temperature goes up).

Detailed explanation-4: -Generally, the existence of friction force will increase the kinetic energy while slowing down the particle velocity since the friction force goes in the opposite direction. When a friction force exists, more kinetic energy will be exerted to keep the particle moving at a certain velocity.