The frictional force does work on the body. Does the internal energy of the body

The frictional force does work on the body. Does the internal energy of the body change at the same time? On what grounds can one judge this?

According to 1 law of thermodynamics: the internal energy of a body ΔU can be changed in two ways: by transferring heat energy (amount of heat) Q to it or by performing work on it by external forces A “: ΔU = Q + A”. When frictional force performs work A “over the body, the internal energy of the body increases. The internal energy of the body depends on the temperature of the body, so the body will increase the temperature and heat up.