A. Calculate the orbital velocity of the Moon using simple geometry (i. e. , the Moon's orbit is circular) The Moon's mass is 7. 35×10 22kg, its orbital radius (around the Earth, of course) is 3. 84×108m, and its orbital period is 27. 3 d. To be clear, the Moon is the "orbiting body" and the Earth is the "body being orbited". These numbers were pulled from the textbook, Appendix F.
b. Now calculate the orbital velocity of the Moon using a formula from Chapter 13 (i. e. , involving the constant G), and some of the values above. What is the percent difference in the velocities of parts a and b?