Question

what is definition of inertia in short

Answer 1

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Inertia is a property of matter that causes it to resist changes in velocity (speed and/or direction). According to Newton's first law of motion, an object with a given velocity maintains that velocity unless acted on by an external force.

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Answer 2

the inability of a body to change its position by itself is called as inertia
ther are 3 types
=>inertia of direction
=>inertia of motion
=>inertia of rest