define inertia of rest,motion and direction????
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A body in rest has tendency to continue to be at rest unless acted on by external agency. This is inertia of rest. eg coin on a table. Similarly body in motion has tendency to continue in motion.eg we move a little more when bus halts suddenly. Also when we travel in one direction we have tendency to travel in that direction itself. This is inertia of direction. eg a cricket ball.
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