Mini-Quiz: Orbital Motion Relative to Another Object

1. Why would you want to show the orbit of one object with respect to the other?

   The is a convenient point of viewCorrect. You understand relative motion. Just as an exercise in mathematicsGood try, but not right. Select another answer. You only consider orbits with respect to the CMSorry, not correct. Try another button.

2. How do you determine the orbital velocity of one object relative to the other?

   You add their tangential velocity equations relative to the CMThat is Correct. Excellent answer. You make M >> mOops! Wrong answer. Re-read the question and try again. You add their tangential velocities relative to each otherSorry, not correct. Try another button.

3. How can the Earth appear to orbit the Moon?

   It is impossible, because the Earth is too big to orbit the MoonOops! Wrong answer. Re-read the question and try again. It depends on whether it is a full or new MoonGood try, but not right. Select another answer. It happens if you view the Earth from the surface of the MoonCorrect. You understand relative motion.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.