Question

Newton's second law of motion 9th standard explanation definition

Answer 1

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 the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant

Answer 2

Hey mate..✌

Here is your answer :-


NEWTON'S SECOND LAW :-
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Fα dp/dt 

F = k dp/dt

Now,

p (momentum) = mv

So,

F = k d(mv)/dt

F = k md(v)/dt

F = k ma

(As, dv/dt = a)

Experimentally k =1

So,

F = ma

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