The newton (N) was adopted as the unit of force in the Systeme Internationale (SI) in the 1960s. It was named in honor of Sir Isaac Newton. His 2nd Law, F=ma was used to derive the unit from the...
No he didn't although he did discover a lot of things about forces and is widely thought of as one of the most influential physiscists of all time. It is for this reason that the SI unit for force...