class 11 physics charter laws of motion
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The property of an object by virtue of which it cannot change its state of rest or of uniform motion along a straight line its own, is called inertia. Inertia is a measure of mass of a body. Greater the mass of a body greater will be its inertia or vice-versa.
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In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite directionWe can now state Newton's first law of motion: An object remains at rest or moves in a straight line at constant speed unless it is acted on by an unbalanced force.Oct 11, 2005
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