3. Shown below are four sets of three graphs. Each column contains three graphs for the same object: position-time, velocity-time, and acceleration-time. For each column, one of the three graphs is given and the other two are unnished. Complete the missing graphs for each of the four objects. Note that the positions and velocities are marked on the uncompleted graphs where needed. (8 marks) 4. An 800.0 kg elevator, initially at rest, accelerates at 3.0 mfs2[dovm]. (a) What force does the cable exert on the elevator? Draw a free body diagram. (2 marks) (b) Calculate how far it has descended after 5.0 s. (2 marks) Zofl