Inertial Mass

An object's resistance to a change in its velocity. Measured in kilograms.

The force required to change the velocity of a body is give by Newton's Second Law:
The rate of change of momentum of a body is directly proportional to the external force acting on the body and takes place in the direction of the force.

where

F = force acting on the body [N]
m = mass of the body [kg]
v = velocity of the body [ms-1]
a = acceleration of the body [ms-2]

See also: Gravitational Mass, Mass.

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Subjects: Physics