Velocity Xf UO Xi t. Velocity distance time Keep in mind that this velocity formula only works when an object has a constant speed in a constant direction or if you want to find average velocity over a certain distance as opposed to the instantaneous velocity. The average speed formula helps in determining the average value of speed if the body is varying continuously for the given time intervals it is known as v av.
Speed is ignorant of direction.
So if the final Velocity is v and the Initial velocity u is known to us we make use of the formula to ascertain v av. Average Speed Total distance travelled Time taken. The average velocity is the displacement a vector quantity per time ratio. It is a direction-aware quantity.