4. The drawing below shows a moving object that has been photographed at equal time intervals. The object starts at rest and moves to the right. The dots show the location of the object each second. 1= 0 0m 10m 20m 30m 40m 50m a. Plot position vs time for the object on the graph below. Label the axes clearly! . . . . b. There are two different ways to graphically determine the instantaneous velocity at t = 3 s. Describe one of them. c. Use one of these methods to find the instantaneous velocity at t = 3 s. Show work