Liv has just seen a commercial advertising a fancy kind of make-up that she would like to buy. She does not have a pen or a piece of paper to write down the telephone number, so she repeats to herself over and over again while she runs into the kitchen to find the telephone. Liv is currently using the process of rehearsal to keep the telephone number active in her short-term memory.

A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i.e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.