Mathematics serves physics. When a physical theory comes into being, it needs a mathematical model to express it, so that it can be better expressed and understood. For example, if you throw something out, it will produce a parabola. If we abandon mathematics and only look at that arc, it is difficult to see what is famous, but if we use mathematics to describe it, it is very different. Mathematics can calculate many things according to the laws of physics, such as knowing the initial velocity and the velocity when you throw an object.