is: one of the fundamental dimensional quantities of mechanics (along with length and time).
is: a property that determines both the acceleration an object will experience in response to an applied force (according to Newton's second law) and the magnitude of the gravitational force it will experience in response to a given gravitational field. These ways of interpreting mass are (at present) believed to be equivalent. [M5.1, P1.1]
has as its SI unit: the kilogram (kg), one of the seven base units. [P1.1, P2.3]
should not be confused: with weight. [P2.3]
is also: an abbreviation used to indicate a particle or body of non-zero mass.
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