Define inertial and non - inertial frames of reference Give example.

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Solution

Inertial references frames $: -$ inertial reference frames in which Newton first law of motion holds $i . e .$ an object at rest and an object in motion remains motion unless acted by a net force $.$ An inertial reference frame is either at rest or moves with a constant velocity $.$
Non $-$ inertial reference frames $: -$ non $-$ inertial reference frame is a reference frame that is accelerating either in linear fashion or rotating around some axis $.$
Examples $: -$ inertial references frames $-$ A train moving with constant velocity $.$
non $-$ inertial references frames $-$ A turning car with constant speed $.$

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