Which best describes the term derived unit in si? 1.one of the metric base units that is the foundation of si 2.a conversion factor between base units 3.a specific combination of base units with its own name 4.a prefix multiplier for a base unit

A "derived unit" is a specific combination of base units with its own name. (3)

Examples:

Combination of base units                       Its own name

kilogram-meter / second²                                 Newton

Coulomb / second                                             Ampere

kilogram-meter² / second² (Newton-meter)     Joule

kilogram-meter² / second³ (Joule / sec)           Watt

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