Thu September 10, 2009 By:

My teacher asked me to differenciate between inertia and mass? Please tell me answer.

Expert Reply
Fri September 18, 2009

Mass is a measure of the amount of material in an object, being directly related to the number and type of atoms present in the object. Mass does not change with a body's position, movement or alteration of its shape unless material is added or removed.

Inertial mass is a measure of an object's resistance to changing its state of motion when a force is applied. An object with small inertial mass changes its motion more readily, and an object with large inertial mass does so less readily.

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