Derivaadühikud

Derivaadühikud, often translated as derivative units, are units of measurement derived from base SI units. Unlike base units such as the meter for length or the kilogram for mass, derived units are formed by combining base units through multiplication, division, or both. For example, the unit for velocity, meters per second (m/s), is a derived unit formed by dividing the base unit of length (meter) by the base unit of time (second). Similarly, acceleration, with units of meters per second squared (m/s²), is derived from length and time.

Many common units are in fact derived units. Area is measured in square meters (m²), which is meter multiplied by meter. Volume is measured in cubic meters (m³), meter multiplied by meter multiplied by meter. Force, defined by Newton's second law as mass times acceleration, has the derived unit of the Newton (N), which is equivalent to kilograms times meters per second squared (kg⋅m/s²). Energy, or work, is measured in Joules (J), which is equivalent to a Newton-meter (N⋅m) or kg⋅m²/s². Pressure is measured in Pascals (Pa), equal to a Newton per square meter (N/m²). Electric charge is measured in Coulombs (C), equal to an Ampere-second (A⋅s). The concept of derived units is fundamental to the International System of Units (SI) and allows for the consistent and logical expression of a vast range of physical quantities.