PHYS 1023 Lecture 3: Chapter 3
24 Aug 2016
School
Department
Course
Professor
Document Summary
Chapter 3: how things move, galileo asks the right questions. Newtonian physics: theory of sir isaac newton, describes the world we see every day, describes every day phenomenon. Four elements: attract object made of same element. Planets made of ether: found only in the heavens and moved in perfect circles around earth. Object with more of an element was attracted more; heavier object falls faster than a light one: galileo"s theory: Differences can be attributed to air resistance. Galileo"s law of falling: if air resistance is negligible, any two objects that are dropped together, will fall together, regardless of their weights and shapes, and regardless of substances of which they are made. Galileo"s experiments: conducted many experiments with falling, understood that objects slow down due to friction, if friction is eliminated, he theorized, objects would continue rolling forever, methodical process. Limited the scope of his questions; one at a time.
