Assume you are on a planet similar to Earth where the acceleration of gravity is approxi- mately 10 m/s2 and the positive directions for displacement, velocity, and acceleration are upward. At time t = 0 s, an elevator is at a displace- ment of x = 0 m with a velocity of v = 0 m/s. A student whose normal weight is 400 N filipkowska (kf6839) – Chapter 4 Quiz – wollins – (1954) 3 stands on a scale in an elevator and records the scale reading as a function of time. The data are shown in the graph. 0 200 400 600 800 0 5 10 15 20 time (s) Scale Reading (N) In which direction does the force due to the scale act on the student?