Communications satellites are placed in a circular orbit

Question

Solve the all parts of given question:

Question: Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. These are called geosynchronous orbits. The radius of the earth is 6.37 × 10⁶ m, and the altitude of a geosynchronous orbit is 3.58×10⁷ m (22000 miles).

Part I: What is the speed of a satellite in a geosynchronous orbit?

Part II: What is the magnitude of the acceleration of a satellite in a geosynchronous orbit?

I need help to solve the above question. And express your answer with the appropriate units.