Io is one of Jupiter's moons. It orbits Jupiter in a circular orbit in the circle is 421 700 km. The orbital period of Io around Jupiter is 42 hours. a) What is the trajectory of Io? b) What is the acceleration of Io, and in which direction does it point? If you did not find the track speed in problem a), you can assume that v = 1, 0 104 m / s. c) What is the mass of Jupiter? If you did not find the acceleration in problem b), you can assume that a = 1.0 m / s2 .