Question: a. What is the magnitude of the orbital velocity, in m/s, of the earth around the sun? The orbit radius of the earth is .
b. What is the radial acceleration, in m/s^2, of the earth toward the sun?
c. What is the magnitude of the orbital velocity, in m/s, of Mercury around the sun? The orbit radius of the Mercury is , the orbit period of Mercury is 88.0 d.
d. What is the radial acceleration, in m/s^2, of Mercury toward the sun? I figured out a but i cant do the rest.