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inertial mass
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inertial mass

physics
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Inertial mass is a fundamental concept in physics that quantifies an object's resistance to changes in its state of motion. It is defined by how much acceleration an object experiences when a force is applied to it; a larger inertial mass means greater resistance to acceleration. This property is directly related to Newton's first law of motion, also known as the law of inertia, which states that an object will remain at rest or in uniform motion unless acted upon by an external force. Inertial mass is distinct from gravitational mass, though experiments have shown they are equivalent.1234

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4 Britannica Sources
  1. inertial mass
  2. law of inertia
  3. principles of physical science - Laws of motion
  4. gravity - Gravitational fields and the theory of general relativity

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