Which of the following could be a stable planetary orbit in a binary system?
A) a large orbit around both stars in a wide binary system
B) an orbit close to one of the stars in a wide binary system
C) a figure-of-eight orbit about both stars in a close binary system
D) an orbit close to one of the stars in a close binary system
Question 2
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled.
A) The displacement is either greater than or equal to the distance traveled.
B) The displacement is always equal to the distance traveled.
C) The displacement is either less than or equal to the distance traveled.
D) The displacement can be either greater than, smaller than, or equal to the distance traveled.