Isaac Newton's First Law of Motion describes the behavior of a massive body at rest or in uniform linear motion, i.e., not accelerating or rotating. The First Law states, "A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force. read more
Newton's First Law (Law of Inertia) - Inertia is the focus of Newton's first law and describes an object's desire to resist a change in motion. See how seatbelts protect you from inertia. read more