Mass is an intrinsic physical quantity of a body, which in modern physics is generally defined as the strength of an object gravitational attraction to other bodies. The cited article gives the unit of mass in the International System of Units as the kilogram, says that mass can also be understood as a measure of the energy content of a body, and says that it can be defined experimentally as a measure of the inertia of a body, meaning its resistance to acceleration when a net force is applied. It stresses that in physics mass is not the same as weight, even though mass is often determined by measuring weight with a spring scale. Units such as the kilogram and the pound are grouped under this quantity.
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Quantity Measured By Unit
Entity-backed identity for the quantity-measured enum value this unit already carries, resolved to a science concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The quantity-measured fact itself stays on the unit unchanged.
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Mass
Wikipedia, lead section
Mass is an intrinsic physical quantity of a body which in modern physics is generally defined as the strength of an object's gravitational attraction to other bodies.
Belongs To: Physics, Lead sentence
Mass is an intrinsic physical quantity of a body which in modern physics is generally defined as the strength of an object's gravitational attraction to other bodies.
Studied In: Physics, Lead sentence
Mass is an intrinsic physical quantity of a body which in modern physics is generally defined as the strength of an object's gravitational attraction to other bodies.
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