## Wikipedia - Velocità velocity, $$v$$, $$c$$

https://doi.org/10.1351/goldbook.V06607
Vector quantity equal to the derivative of the position vector with respect to time (symbols $$u$$, $$v$$, $$w$$ for components of $$c$$).
Sources:
Green Book, 2nd ed., p. 11 [Terms] [Book]
ISO 31-1: 1992 [Terms] [Book]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 997 [Terms] [Paper]