AS101 Lecture Notes - Lecture 8: Semi-Major And Semi-Minor Axes, Net Force
Document Summary
Brahe enjoyed life and he liked to party. Brahe called over kepler to work together. Mars was the planet that was most poorly matched. Kepler would go to brahe to verify his ideas about the universe. Kepler"s law 1 (1609: all the planets are ellipses with the sun as the main focus, think about it as a stretched out circle. If you measure the distance from one focus and go to another point and then go another focus, the distance is always going to be the same. A line connecting a plant to the sun sweeps out equal ares in equal intervals of time: speeds of planets change when they are near the sun. The orbital distance and the average distance have a relationship. Galileo also studied the accelerated motion of falling bodies. Heavier objects fall faster than lighter objects. All objects experience the same gravitational acceleration on the earth. Velocity: speed with a direction of travel.