bps
bps
The units of measurement for rotational speed in an engine, commonly denoted as rpm, are revolutions per minute.
You can test the speed of an external hard disk by transferring a large file to it and measuring how long it takes. This will provide an accurate measurement of how fast it can transfer data.
The refractive index is measured by comparing the speed of light in a vacuum to its speed in a material. Common methods for this measurement include using a refractometer, spectrometer, or interferometer.
The knot, equivalent to one nautical mile per hour.
There is no such measurement. The speed (velocity) of an object is what's called a "scalar" unit. That means that it has this value regardless of what it might be pointed at. In physics, direction is described in terms of "vector". That's the arrow pointing to where the speeding object is headed.
Motion is described in terms of speed by calculating the rate at which an object covers a distance. Speed is the distance traveled by an object per unit of time, commonly measured in meters per second (m/s) or kilometers per hour (km/h). It indicates how fast or slow an object is moving.
Acceleration is the rate of change of velocity and is measured in ms2 (meters per second squared). It can also be described as the time it takes for the speed to change.
Temperature is a measurement of the average speed of the particles in a substance.
A unit that is commonly used in astronomy is the light-year - the distance light travels in a year.
Most commonly reffered to would be RPM - Rounds Per Minute. The speed of which it is rotating.
Kilogram is a measurement of weight not speed.