What contribution did Isaac Newton?

Answer 1

Isaac newton is the man who described the laws of how objects move when forces act upon them, and devised the mathematical equations that describe how gravity affects other objects. Please note that Newton did NOT figure out how gravity works; we STILL don't how how or why it works as it does. But because of Newton, we can calculate how objects will behave under the influence of gravity or other forces.

In order to devise these equations, Newton developed a branch of Mathematics called the "calculus" He was not the only Mathematician to contribute but the calculus is used in many other applications.