Velocity consists of any unit of speed, plus a direction.
A unit of speed is (any unit of length or distance) divided by (any unit of time).
Examples:
-- inches per second
-- feet per second
-- meters per second
-- miles per hour
-- kilometers per hour
-- furlongs per fortnight
-- yards per week
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The unit of velocity in the SI unit system is meters per second (m/s).
No, the SI unit for radius is meters (m) and the SI unit for linear velocity is meters per second (m/s). Radius and linear velocity are related in rotational motion, where linear velocity is the tangential velocity at a certain radius from an axis of rotation.
The SI unit for speed and velocity is meters per second (m/s). Speed is a scalar quantity that represents how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.
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.
No, air velocity is typically measured in feet per minute (ft/min) or meters per second (m/s). Cubic feet is a measurement of volume, not velocity.