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second law is the real law of motion |
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Answer» Hi We shall derive the 1st\xa0and the 3rdlaw of motion fron the 2nd\xa0law.|Derivation of 1st\xa0law|According to Newton’s 2\xa0nd\xa0law of motion,F = maWhere, F is the force applied, m is the mass of the body and a is the acceleration of the body.So,In absence of a force,F = 0=> ma = 0=> a = 0Since, m cannot be zero for a body.Zero acceleration means, body at rest will remain at rest and a body in uniform motion will continue its uniform motion. Which is Newton’s 1st\xa0law of motion.|Derivation of 3rd\xa0law|Consider an isolated system of two bodies A and B. An isolated system is such that no force acts on the system.This is the Newton’s third law of motion for a body exerting some force on another.Thus, Newton’s 2nd\xa0law of motion is the most basic law of motion. |
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