You explore a distant planet. When you drop a rock from rest, it takes 1.2 s to fall a distance of6 meters. You walk around the planet and find its

circumference is 18,220 km. Your space ship is orbiting above the surface of the planet at a distance of 200 km. A. Calculate the acceleration due to gravity on the planet. B. Calculate the mass of the planet. Give your answer in units of ME which is the mass of Earth. C. Calculate how much time it takes your spaceship to complete one orbit. Give your result in hours.