Mathematics is a tool of other disciplines. The most important thing, but if mathematics should not be used in other subjects, it is also a number game and meaningless. Because mathematics is developed to solve practical problems. Therefore, a mathematician may not know physics, but a physicist can almost regard it as a mathematician. Many physicists are very good at mathematics.
Secondly, physics is very important, because whether in ancient or modern times, it is physics that leads science forward and always walks in the forefront of science. Every major revolution in science is almost the result of a breakthrough in physics. Then other disciplines quickly followed suit. The principles and methods of physics always show a strong "leading" style! ! ! ! !
I hope I can help you ~