The motion of a body can change (accelerate) only when acted upon by an unbalanced force.
Its a matter of being scientifically rigorous. You can not claim the 2nd law as a law unless you first establish the first law.
the law of inertia
yeah.
Law of inertia.
h
Law of Inertia.
It isn't.
It is associated with the law of gravitational pull.
Newtons first law of physics
Actually, the first one is completely independent on the second one. But the second one doesn't make any sense without the first one.
Force.
It is sometimes referred to as the law of inertia.