Sarah wanted to know the velocity of an airplane traveling from houston to dallas. after recording the distance (in miles) and time (in hours) it took to travel to dallas, what other measurement does sarah need to determine the airplanes velocity?

Sarah needs to know also the direction of the airplane.

In fact, the velocity of an object is a vector, which means it has

a) a Magnitude (the speed)

b) a direction

Knowing the distance and the time, Sarah is only able to calculate the speed (which is the magnitude of the velocity), given by

but in order to give complete information about the velocity, she also needs to know the direction of the airplane.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.