Position, Distance, and Displacement 


 Distance- How far an object travels. A scalar quantity expressed in meters

Example: The car traveled 20 meters.

 If you were to travel a distance of 125 miles from Piano, you don't know if you'll end up in Wichita Falls, Longveiw, or Waco.  So when we refer to distance, all we know is how far we have traveled.  As a matter of fact  you could end up in Fort Worth (lost on the high driving in circles etc.....)


 Position- Location with respect to the origin. Vector quantity.

The exact location of an object with respect to the initial position (typically refereed to as the origin). 

The position vector can be expressed in several ways (6,4) or how you will see it in physics text

6 in the x direction + 4 in the y direction (there is a short hand way to express it ge to it later)

7.2 meters at about 34 degrees is another.

or it can be express in matrix form if you know it.


  Displacement- How far and in what direction an object is from its starting point. Vector quantity expressed in meters.

The easiest way to look at displacement is as "how far an object is away from its starting point", it's not how far you travelled, thats distance, and position is where the object is located with respect to the origin.  In order to have a displacement you need to have to positions, the initial position and a final position, and displacement is the difference between those two points.