Velocity is a measure of how fast something moves in a particular direction. In other words, a velocity is a speed with a direction. For instance, if an object moves east at 7 metres per second (7 m/s), we would say that its velocity is 7 m/s to the east.
For example, if an object moves 20 meters (m) to the left in 4 seconds (s), its velocity (v) would be equal to:
A change in velocity is acceleration
- "Physics Homework Help: Speed, Velocity, Acceleration". physics247.com. http://www.physics247.com/physics-homework-help/speed-velocity-acceleration.php. Retrieved 25 March 2010.