Question

newton's first law of motion is also called as law of inertia.why?

Answer 1

because An object at rest stays at rest and an object in motionstays in motion with the same speed and in the same direction unless acted upon by an unbalanced force threrefor Newton's first law of motion is also called as law of inertia

Answer 2

because it says that an object remains to tend in a state of motion unless it is applied an external outside force.