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the first law of motion deals with inertia. it describes about the inertia or the tendency of a body to remain in rest or uniform motion.more over, implicit in the discussion of Newton's first law is the concept of an inertial reference frame, which for the purposes of Newtonian mechanics is defined to be a reference frame in which Newton's first law holds true.

There is a class of frames of reference (called inertial frames) relative to which the motion of a particle not subject to forces is a straight line.

hence newtons first law is also called law of inertia.


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15y ago

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