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Why second law of motion is real law? |
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Answer» We shall derive the 1st\xa0and the 3rd\xa0law of motion fron the 2nd\xa0law.Derivation of 1\xa0st\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. Because it contains both first and third laws in it.. |
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