MKS - metre, kilogramme, second. Volume is a cube of a distance, so the MKS system uses cubic metres, but often cheats and uses litres(cubic decimetres). Density is mass divided by volume, so the MKS unit is kilos per cubic metre - but that too is seldom used.
The density of water in the MKS (meter-kilogram-second) system is 1000 kg/m^3, which means that one cubic meter of water has a mass of 1000 kilograms.
Kilograms per cubic metre
The correct unit for speed in MKS system is 'm'.
In MKS measurement system, kilograms are used to measure mass
when the unit of any physical quantity is measured in terms of meter or kilogram or second or in combination of these then it is said that unit is in MKS system.
In the MKS (meter-kilogram-second) system, the unit of mass is the kilogram (kg).
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CGS is NOT common nowadays. MKS is common because the SI, the international system of units, is based on it.
The unit of electrical energy in the MKS system is the joule (J).
meter/second2.
The MKS (meter-kilogram-second) system is a variant of the metric system that uses the meter for length, kilogram for mass, and second for time. The SI (International System of Units) system builds on the MKS system but includes additional base units, such as the kelvin for temperature and the candela for luminous intensity. As a result, the SI system is more comprehensive and widely used in scientific and engineering fields.