Velocity tells the speed AND what direction it's in.
-- "30 miles per hour" is a speed.
-- "30 miles per hour north" is a velocity.
-- "30 miles per hour east" and "30 miles per hour south" are
the same speed but different velocities.
Distance covred in unit time is called speed
http://wiki.answers.com/Q/The_difference_of_speed_and_velocity" The difference between speed and velocity is that speed is a scalar quantity(that have only magnitude) and velocity is a vector quantity(that have both magnitude and direction).
Velocity is the change in displacement in a unit time in a specific direction. Speed is the magnitude of velocity and has no direction. Acceleration is the change in velocity in a unit time.
The speed of anything is measured in metres per second. The difference between speed and velocity is that velocity is a vector, that is it has direction and well as magnitude. So velocity would be measured in metres per second in a certain direction.
The difference between speed and velocity is that velocity is speed with a direction vector associated with it. It's that direction vector that makes them different.Speed is displacement (distance traveled) per unit time. Velocity is displacement (distance traveled) per unit time in a given direction. The "directionality" associated with velocity makes it a vector quantity, while speed is a scalar quantity.The main difference between them in everyday life is that "speed" is usually usedproperly, but "velocity" is usually used Improperly.-- "30 miles per hour" is a speed-- "30 miles per hour north" is a velocity-- "30 miles per hour north" and "30 miles per hour west" are the same speed but different velocities.
Acceleration is a change of velocity (per time unit).Acceleration is a change of velocity (per time unit).Acceleration is a change of velocity (per time unit).Acceleration is a change of velocity (per time unit).
The word speed is distance per unit of time. It is frequently used as a substitute for velocity, and it is in more common usage. But there is a difference between speed and velocity. Velocity has a direction vector associated with it. It's speed + direction. That's usually not a big deal when talking about "regular" stuff, but don't tell a physics teacher that.
velocity is the speed of the flow (for example, meters/sec.) Flow rate is the volume per unit time (example: liters/sec.)
A unit of speed is (any unit of length) divided by (any unit of time). A unit of velocity is any unit of speed, along with a direction.
Acceleration is a change of velocity (per time unit).Acceleration is a change of velocity (per time unit).Acceleration is a change of velocity (per time unit).Acceleration is a change of velocity (per time unit).
The SI unit for speed and velocity are the same: meter per second (m/s)
Velocity is speed, plus an indication of direction. To indicate a velocity, you can indicate a speed (this will logically use units of speed), and a direction.