Question

What we learn by newton's 2nd law of motion?

Answer 1

First law:In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.[2][3]Second law:In an inertial reference frame, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by theacceleration a of the object:F = ma. (It is assumed here that the mass m is constant – seebelow.)Third law:When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.

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