I am taking Finite mathematics we learn things such as annuities and interest rates as well as matrices. Anyways i have taking math my entire life. And i do see the physical parts with things such as 1+1=2 but not in say y=5x+6 graphed out, or with isolating variables with functions like 8x+3=2x-4. At what point in mathematics does it start describing the physical world like the velocity of things, the rate/force a ball will hit and bounce against a floor and just nature in general. At what point does math begin describing these things?