Question

what is newtons law of motion

Answer 1

✨There are three laws of motion ✨

⚫First law of motion - It states that an object remain in rest or motion until an external force act on it .

⚫Second law of motion - It states that the rate of change of momentum is equally proportional to the applied unbalanced force .

⚫Third law of motion - It states that every action has an opposite reaction .

✨hope it helps ☺☺✨

Answer 2

$\huge\mathfrak{Newton's\:of\: Motion\::}$

There are three types of Newton's law :-

$\textbf{1) Law of Inertia :}$

It is Newton's First law.

According to it an object at rest remains at rest, am object in uniform motion remains I uniform motion until or unless external force is applied on it.
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$\textbf{2) Law of Force :}$

It is Newton's Second law.

According to it the force is directly proportional to rate of change of linear momentum.

Mathematically :-

F α 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,

$\textbf{F = ma}$
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$\textbf{3) Action-Reaction Law :}$

It is Newton's Third Law.

According to it for every action there is equal and opposite reaction.

Mathematically :-

$\textbf{F12 (vector) = - F21 (vector)}$
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