original question: What is the measure for a unit of density used in the same measurement system as [Kilometres per hour] as a measure of speed?
answer: kilogram per cubic metre
answer type: Unit of Density.
auxiliary information: The kilometre per hour is a unit of speed, expressing the number of kilometres travelled in one hour. The unit symbol is km/h or km¬∑h‚àí1, however, it is also commonly referred to as kph in English-speaking countries. Worldwide, it is the most commonly used unit of speed on road signs and car speedometers.
Within the same measurement system of [Kilometres per hour] as a measure of speed, what is the measurement for a unit of density?