Kepler Flashcards
Kepler's First Law
Planets orbit the sun in elliptical paths
Kepler's Second Law
Planets move faster when close to the sun
Kepler's Third Law
Planets with larger orbits take a long time to complete an orbit
Newton's First Law
Only a force acting on an object can change its motion
When written as P^2 = a^3 Keplers 3rd Law (with P in years and a in AU) is applicable to
Any object orbiting any other object
For a planet in an elliptical orbit to sweep out equal areas in equal amounts of time it must...
Move fastest when near the sun