displacement
Position is the location of the object whether it's a person, a ball or a particle at a given moment in time. Displacement is the difference in the object's position from one time to another. Distance is the total amount the object has traveled in a certain period of time. Displacement is a vector quantity direction matters , where as distance is a scalor only the amount matters . Distance and displacement are the same in the case where the object travels in a straight line and always moving in the same direction.