PHYS 190 Lecture Notes - Lecture 7: Apollo 15, Physical Law
31 Jan 2018
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Document Summary
Galileo - other crucial empirical refutations of ancient objections to heliocentric cosmology. Revealed basic truths of motion & gravity hiding in plain sight for 2 millenia. Galileo laid foundations for newton"s total transformation of physical law. Galileo & newton - physical laws in diametric opposition to aristotle. Apply to every object, everywhere & everywhen, i. e. on earth & in the heavens, past, present, future. Laws of physics always approximate & are changed over time. Discovered by galileo, fully elucidated by newton. An object tends to stay in motion, and an object at rest, unless the object is acted upon by an outside force . Force - any way in which something can be pushed/pulled. A: objects come to rest unless you push them. G: no, that"s friction, not a fundamental law of motion. Acceleration = quantitative prediction motion change. Force = net push/pull causes change in motion. Mass = inertia is resistance to change.
