Imagine a woman starting from rest, running up the stairs from the bottom floor of her apartment building to her apartment on the third floor, and then stopping to unlock her apartment door. 1) What information would you need to know in order to find the work done on her by gravity? What equation would you use? 2) What is the work done by her on gravity? Explain. 3) What is the total work done on her by all forces? How do we know this