in order to increase the amount of exercise in her daily routine, Tara decides to walk up the three flights of stairs to her car instead of taking the elevator. Each of the steps she takes are 18.0 cm high, and there are 12 steps per flight. (b) If the human body burns 1.5 Calories (6.28 ? 103 J) for each ten steps climbed, how much energy (in J) has Tara burned during her climb? (c) How does the energy she burned compare to the change in the gravitational potential energy of the system?