derive an expression for second law of motion
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Explanation:
Newton’s second law of motion states that the force exerted by a body is directly proportional to the rate of change of its momentum. For a body of mass ‘m’, whose velocity changes from u to v in time t, when force ‘F’ is applied.
F∝ Change in momentum
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Time
F∝m = mv- mu
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t
F∝m = v - u
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t
⇒F∝ma⇒F=kma (•.• a= v - u. )
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t
⇒F=ma(∵k=constant=1)
Hence Proved !!!!!
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