i want all derivations of first , second and third law of motion and also of conservation of momentum??????????

Hi,
The three postulates given by Newton on motion of a body gives us full description of dynamics of the system.
These are postulates and are not derived from any other equation.
The mathematical form of Newton’s second law is given as

Hope this helps,
Good luck.

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derivationof first law-f=ma

derivation of third law-m1u1+m2u2=m1v1+m2v2

sorry.i am quite confused with second law

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f = m.a 

=mlt

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