Apparent weight. A superhero of mass 75 kg stands on a bathroom scale in an elevator. Find the reading on the scale if the elevator: a) moves upwards at constant speed of 3 m/s. b) moves downwards at constant speed of 3 m/s. c) moves upwards and speeds up at a rate of 3 m/s2 d) moves upwards and slows down at a rate of 3 m/s