A) Derive the rocket equation (be sure to show a diagram, indicate where equations come from, etc). B) Calculate the required mass of fuel to put you, a space buddy, and cookies & milk into a circular orbit at 7.9 km/sec. You may neglect the small amount of potential energy required to get you above the atmosphere. Assume that the rocket and spacecraft weighs 13,417 N, and has an exhaust velocity of 3.30 km/sec. You may also assume that you are at rest even though the Earth is rotating. C) What would be better about a two stage rocket? Why? 7 points.