How you can establish newton's first law of motion from nwton's second law of motion?

Answer 1

We know that, P=mf (from newton's 2ND law of motion)

If , P=0 then also , mf=0

But , m or mass can't be 0 . So , f=0 [f=Accelaretion]

IF , Accelation is zero the matter will be stopped.

Then it'll be the newton's 1ST law of motion : Every body remains in a state of constant velocity unless acted upon by an external unbalanced force.This means that in the absence of a non-zero Net_force, the Center_of_massenterof mass of a Physical_bodyhysicalhysicalbody either remains at rest, or moves at a constant velocity.

Answer 2

Newton's first law of motion states that an object will remain at rest or move at a constant velocity unless acted upon by an external force. This can be derived from Newton's second law, F = ma, by considering the case where there is no net force acting on an object (F = 0), which results in acceleration (a) being zero and therefore the object maintaining its state of motion.