Question

State first law of motion and explain it.

Answer 1

Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. It may be seen as a statement about inertia, that objects will remain in their state of motion unless a force acts to change the motion.

For example; A block kept on the table will be at rest until net external force applied to it but when external force apply it will start to move.