AST101H1 Lecture Notes - Lecture 7: Orbital Period, Escape Velocity

• School: UTSG
• Department: Astronomy and Astrophysics
• Course: AST101H1
• Professor: Bryan Gaensler, C. Barth Netterfield, Ilana MacDonald

Document Summary

Kepler"s 1st law: planet orbit the sun in an elliptical pattern, with the sun at one focus. Nothing lies at the other focus, and the sun is not right in the middle. Kepler"s 2nd law: planets trace out equal area in equal time. Kepler"s 3rd law: a planet"s orbital period depends on its distance from the sun as p2=a3. Presented the idea of force and the laws of motion. He was driven by his faith and thus believed that the rules applied on earth must also apply to. The car is going due north at 60 km/h. The car is changing speed from 0km/h to 100km/h in 9 seconds or acceleration can also be the car changed from going north at a speed of 60km/h to going east at a speed of 60km/h in 20 seconds. An object in motion remains in motion unless acted upon by an outside force.