Laws are simply observations of phenomena. Gravity is very easily proven. The theories behind WHY it happens, when/where it applies, etc. are not “proven”
I do not need to study anything to observe that gravity exists. Science is making itself important to create authorities. Mathematics is the only science that is really useful/proven.
Physics is based on Mathematics. How can physics be the mother if it depends on mathematics? Language are letters and words which describe mathematics.
Child needs mother to be born. Nature doesnt need physics. Mathematics doesnt need physics. Physics needs both of them to exist. There you see who is the mother and who is the child.