What is force?Force is the push or pull on an object resulting from the object's interaction with another object that causes it to change velocity (to accelerate). It is called an interaction because if one object acts on another, its action is matched by a reaction from the other object. This idea is known as Newton's third law.
InputNewton is the International System of Units (SI) derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics.
Millinewton is a metric unit of force equal to 1/1000 of a Newton.