What does Newton's First Law of Motion state about objects at rest or in motion?

Newton's First Law of Motion states that an object at rest will stay at rest, and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by an external force. This principle highlights the concept of inertia, which is the tendency of objects to resist changes in their state of motion. In practical terms, it means that for any change to occur in the state of an object—whether it's moving or stationary—an external influence, such as a push, pull, or other forces (like gravity or friction), must be applied. This foundational law is crucial for understanding motion and mechanics in physics, as it establishes the baseline behavior of objects in the absence of forces.