Position: is the location of the particle with respect to a chosen reference point that we can consider to be the origin of a coordinate system.
Displacement: the displacement of a particle is defined as its change in position in some time interval. As the particale moves from an initial position to a final position its displacement is given by:
Distance: is the length of a path followed by a particle. distance is always represented as a positive number, whereas displacement can be either positive or negatve.
Average velocity: of a particle is defined as the particle’s displacement divided by the time interval during which that displacement occus:
Average speed: of a partical, a scalar quantity, is defined as the total distance traveled divided by the total time interval required to travel that distance: