Term
A planet is moving in a perfectly circular orbit around the sun. How much work is being done by the sun? 

Definition


Term
T or F: Planets move in elliptical orbits, and the sun is at the center of the ellipse. 

Definition
False: The sun is at the focus of the ellipse. This is Kepler's first law of planetary motion. 


Term
T or F: A line joining any planet to the sun sweeps out equal areas in equal times. 

Definition
True. This is Kepler's second law of planetary motion. 


Term
For a satellite moving along a circular path of radius r, what is the relationship between linear velocity v and angular velocity w? 

Definition
For circular motion v = rw 

