Question

define second law of motion ​

Answer 1

it states that the external force is the rate of change of linear momentum.

Fext=dP/dT

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Answer 2

In an inertial frame of reference, the vector sum of the forces F on an object is equal to the mass mof that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant
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