Question

satae newtons first law of motion and how is it deduction second law

Answer 1

Newton's first law states that until and unless an external force is applied on a body , the body tends to retain its inertia , that is , retain its state of motion or rest .

Deduction of first law from the second law:
we know , F =ma
If the force applied on a body is zero , then the acceleration of the body has to be zero ( because mass of a body cannot be zero) which means that the state of motion or rest of the body is constant and thus the Newton's first law of motion is derived.