Answer:
In order to determine the distance traveled by an object, you first have to establish the car's location (position) as well as its direction. A reference point from which distances can be measured must be selected. In this activity, the first reference point is the starting position which is labeled d=0. This position, along with the other marks made at 100 cm intervals in a straight line, provides a reference frame to be used to determine the car's location. The distance traveled is the change from one position to another relative to our frame of reference. This change in position is also called displacement. Displacement is a distance and the direction of the changing position of an object.
