AST101H1 Lecture Notes - Lecture 7: Isaac Newton

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Netterfield

Document Summary

Johannes kepler: worked from tycho brache"s data. Galileo: showed that jupiter has moons, showed that the moon has craters, venus has phases (means its orbiting the sun, all define the sun is the center of the solar system and not the earth. Issac newton: revolutionized math and science, (co) invented calculus, presented the idea of force and laws of motion (3 laws, for every force, there is always an equal and opposite, described the law of gravity. Some definitions: speed: the rate of change of position, ex. car is travelling 60km per hour, velocity: speed and direction, ex. car is travelling 60km per hour due north, acceleration: the rate of change of velocity, ex. The car changed speed from 0km/hr to 100km/hr in 90s: or car changed from going due north at 60km/hr to going due east at 60km/hr in 20s.