Collapse question part Part 1 (a) At location A: What is the direction of the gravitational force exerted on the comet by the star? Is the parallel component of the net force on the comet zero or nonzero? Is the perpendicular component of the net force on the comet zero or nonzero? Is , the rate of change of the magnitude of the comet's momentum, positive, negative, or zero? Is , the direction of the comet's momentum, changing or not changing? By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor.