Question

what is newtons law ​

Answer 1

Every object in a state of uniform motion will remain in that state of motion unless an external force acts on it.

Force equals mass times acceleration [ f(t)=m\,a(t) ].

For every action there is an equal and opposite reaction

Answer 2

Newton first law of motion
.. if anything is in rest then it remains at rest until and unless and external force is required to change its position
3. for every action there is an equal and opposite reaction