What is newton's second
law of motion and Write the statement and derive it.
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Newton's second law of motion states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass.
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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 /time
F∝ mv−mu /t
F∝m( t v−u )/t
⇒F∝ma⇒F=kma(∵a= (t v−u) /t )
⇒F=ma(∵k=constant=1)
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