What is velocity?

Question

What is velocity?

destinymasha · Answer

the speed of something in a given direction.

doc.brown · Answer

What is speed?

destinymasha · Answer

Speed is the distance travels per unit time

anonymous · Answer

Velocity is a vector quantity that refers to "the rate at which an object changes its position." Imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. While this might result in a frenzy of activity, it would result in a zero velocity. Because the person always returns to the original position, the motion would never result in a change in position.

doc.brown · Answer

meters per second in a direction?

doc.brown · Answer

change of position in a direction per second?

destinymasha · Answer

change of position - displacement

doc.brown · Answer

Wikipedia says velocity is a rate of change of the position of an object, equivalent to a specification of its speed and direction of motion.
But then goes on to define the speed of an object as the magnitude of its velocity.

Aren't they using one to define the other here?  Which comes first?

destinymasha · Answer

im not sure - http://en.wikipedia.org/wiki/Wikipedia:Wikipedia_is_not_a_reliable_source

doc.brown · Answer

lol

destinymasha · Answer

thank you!