Average speed is a scalar quantity that describes distance traveled divided by the time during which the motion occurs Displacement is the difference in the initial and final positions of an object

Average velocity is displacement over the time period during which the displacement occurs. A description of motion depends on the reference frame from which it is described

reference frame — a coordinate system from which the positions of objects are described. distance — the length of the path actually traveled between an initial and a final position. scalar — a quantity that has magnitude (and possibly sign) but no direction. average speed — distance traveled divided by time during which motion occurs.