2. the following data represent the initial (d) and final (d2) positions of a car, bicycle, pedestrian, and skateboarder car +2m & +14m bicycle +7m & +2m pedestrian -1m & +2m skateboarder +4m & -1m a. draw a number line and label an origin as point "o". mark the initial position of each object above the line. you will need to use a separate piece of paper, b. mark the final position of each object below the number line. c. calculate the displacement of each object. d. what is happening? if each displacement takes place in the same period of time, write a paragraph to describe the motion of each object.