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Why length, mass and time are chosen as base quantities in mechanics ?

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In mechanics, length, mass and time are chosen as the base quantities because
(i) there is nothing simpler to length, mass and time.
(ii) all other quantites in mechanics can be expressed in terms of length, mass and time.
(iii) length, mass and time cannot be derived from one another.
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PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Very short Answer Questions
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