Write a simple 4-5 sentence explanation about Newtons First Law of Motion.

Newton's first law of motion, often called the law of inertia, states that an object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by an external force. It implies that an object will maintain its current state of motion, be it still or moving, unless an external force is exerted. This law emphasizes the concept of inertia, which is the tendency of an object to resist changes in its state of motion. In simpler terms, objects want to keep doing what they are already doing, and they require something to change their motion.