It is defined by taking the fixed numerical value of the Planck constant h to be 6626 070 15 10 34 when expressed in the unit J. This gold bar has a mass of 1 kg. Definition of Units explained with real life illustrated examples.
Metric Unit Conversions - Pre Algebra Help.
The kilogram symbol kg is the SI unit of mass. If a body has a mass of 60 Kg on earth even on the moon the mass of the same body is 60 Kg. 1 kg 1000 grams. SplashLearn is an award winning math learning program used by more than 40 Million kids for fun math practice.