a satellite in an elliptical orbit is moving from position A, where its kinetic energy is 15 MJ and its total mechanical energy is 27 MJ, to a new position B, where its kinetic energy is 12 MJ. a) what is the work done (if any) by the net force acting on the satellite, when it moves from A to B? b) is the satellite getting closer or going away from the planet it is orbiting around? c) what is the total mechanical energy of the satellite at point B