If it could go behind the tapping device, its position would become negative. For instance, a position x = 2 meters means youre 2 meters behind the tapper instead of 2 meters in front of it. A. At which of the lettered points on the graph below: Is the motion slowest? Is the object speeding up? Is the object slowing down? Is the object turning around? B. A common mistake is to say the person reverses direction at point E. Why do you think a student might make that mistake? What might you say to the student to help him avoid that mistake in the future?