Distance is a measure of the total length of the path taken during the change in position of an object. ● Distance is a scalar quantity . Scalar quantities are those that specify size/magnitude, but not direction. E.g. Distance is 11m Displacement is a measure of the change in the position of an object - a straight line between where it started compared to where it finished ● Displacement is a vector quantity . Vector quantities are those that specify a direction as well as magnitude. ○ E.g. Displacement is 5m north (from original position, even if the total distance travelled is 11m) Example of Distance vs Displacement: A runner going around a 400m circular race track. Even if the runner runs a distance of 400m around the racetrack, since they end up at the start/finish line, their total displacement is 0m.