Other contributors have said "Division of mechanics in physics?" is the same question as "What is the division of mechanics in physics?" If you believe that these are not asking the same thing and should be answered differently, click here
I do not know what "division of physics" specifically refers to. If you are looking for the axiomatization of physics (one of Hilbert's problems), read the article below:...
Physics is the field of science that studies the physical world. From the large (galaxies, planets, etc) to the small (how proteins fold, atoms, etc) physics plays a role. It is a natural science...