Background Material Answer the following questions after reviewing the "Kepler's Laws and Planetary Motion" and "Newton and Planetary Motion" background pages. Question 1: Draw a line connecting each law on the left with a description of it on the right. Question 2: When written as P2 = a3 Kepler's 3rd Law (with P in years and a in AU) is applicable to … a) any object orbiting our sun. b) any object orbiting any star. c) any object orbiting any other object. Question 3: The ellipse to the right has an eccentricity of about … a) 0.25 b) 0.5 c) 0.75 d) 0.9 Question 4: For a planet in an elliptical orbit to "sweep out equal areas in equal amounts of time" it must … a) move slowest when near the sun. b) move fastest when near the sun. c) move at the same speed at all times. d) have a perfectly circular orbit. Kepler’s 1st Law Kepler’s 2nd Law Kepler’s 3rd Law