Define: A kilogram is a unit that had to be agreed upon to a be a certain weight. A kilogram was agreed to weight a 1000 cubic centimeters of water at its temperature of maximum density. Quoted from webster its " a unit of force or weight equal to the kiolgram mass under the gravitational attraction equal to that of the earth."
Base or derived: Its a base. While I did my research it kept saying a base unit. So I stuck with that as my final answer.
Kilogram
Define: A kilogram is a unit that had to be agreed upon to a be a certain weight. A kilogram was agreed to weight a 1000 cubic centimeters of water at its temperature of maximum density. Quoted from webster its " a unit of force or weight equal to the kiolgram mass under the gravitational attraction equal to that of the earth."
Base or derived: Its a base. While I did my research it kept saying a base unit. So I stuck with that as my final answer.
Sources:
http://www.merriam-webster.com/dictionary/kilogram