NATS 1945 Lecture Notes - Lecture 3: Pioneer 10, Net Force
31 Oct 2017
School
Department
Course
Professor
Document Summary
Not only did newton formulate the mathematical definition of gravity, he did the same thing for motion. Motion: under the influence of any type of force. So, not just falling motion toward a source of gravity, but any kind of motion caused by a push or a pull from any source. Ne(cid:449)to(cid:374)"s 1st law: objects in motion maintain their motion unless acted upon by an external force. B(cid:455) (cid:862)(cid:373)ai(cid:374)tai(cid:374)i(cid:374)g their (cid:373)otio(cid:374)(cid:863) it (cid:373)ea(cid:374)s that i(cid:374) the a(cid:271)se(cid:374)(cid:272)e of a(cid:374)(cid:455) pushes or pulls, a moving object will maintain its speed and its direction, it will never slow down or speed up nor change direction. Similarly, in the absence of pushes and pulls and object that is at rest will remain at rest. An example of his first law: you have two cats and by staying at rest they demonstrate that objects at rest will remain at rest unless acted upon by an external force.
