Mechanical Base Units

The base units of space, mass and time, the three on which mechanics rests: the metre for length, the kilogram for mass and the second for time. Together they were the foundation of the metre-kilogram-second system from which the modern SI grew, and every unit of motion, force, energy and power is built from them. A unit belongs here when its cited article calls it the SI base unit of length, mass or time. It excludes the base units of electric current, temperature, amount of substance and luminous intensity, which sit in their own group, and derived mechanical units such as the newton or the joule.