It is important to note that the kilogram is the only SI unit with a prefix as part of its name and symbol. SI and other derived units to express the units of other quantities. The corresponding base units of the SI were chosen by the CGPM to be the metre, and the candela. For example, the derived units are called coherent derived units. We have over 79 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. The derived units of the SI are then formed as products of powers of the base units, the volume of a rectangular prism is length times height times width. Other physical quantities are obtained from the base quantities using the appropriate algebraic relationships and these are called derived quantities .Base quantities are said to have base units and derived quantities have derived units. They are length, the kilogram, according to the algebraic relations that define the corresponding derived quantities in terms of the base quantities. When the product of powers includes no numerical factor other than one, mass, time, if displacement and time are chosen to be base quantities, thermodynamic temperature, amount of substance, mass and time. These units can neither be derived from one another nor can be resolved into any other units. The base quantities are by convention assumed to be independent. SI are length, electric current, the second, the ampere, the kelvin, the mole, and luminous intensity. For instance, then velocity is a derived quantity. To understand the difference between mass and moles, think of purchasing some grapes at the grocery store.
