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**ZZipZZipe** · 08-15-2012, 04:11 PM

FWIW, this is how Wikipedia defines mass:

"In physics, mass (from Greek μᾶζα "barley cake, lump (of dough)"), more specifically inertial mass, can be defined as a quantitative measure of an object's resistance to acceleration. In addition to this, gravitational mass can be described as a measure of magnitude of the gravitational force which is
1.exerted by an object (active gravitational mass), or
2.experienced by an object (passive gravitational force)

when interacting with a second object. The SI unit of mass is the kilogram (kg)."

So mass (or at least inertial mass) is a measure of inertia.

08-15-2012, 04:11 PM	#60
ZZipZZipe Join Date Oct 2005 Posts 482 Senior Member	FWIW, this is how Wikipedia defines mass: "In physics, mass (from Greek μᾶζα "barley cake, lump (of dough)"), more specifically inertial mass, can be defined as a quantitative measure of an object's resistance to acceleration. In addition to this, gravitational mass can be described as a measure of magnitude of the gravitational force which is 1.exerted by an object (active gravitational mass), or 2.experienced by an object (passive gravitational force) when interacting with a second object. The SI unit of mass is the kilogram (kg)." So mass (or at least inertial mass) is a measure of inertia.
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