Newton's first law of motion is also known as the law of inertia. Inertia is defined as an object's tendency to resist any change in motion. Another synonym for this law is the principle of reluctance. This principle states that an object at rest will stay at rest, while an object in motion will stay in motion unless acted upon by an external force. A related term is the law of action and reaction, which is also known as Newton's third law of motion. It states that for every action, there is an equal and opposite reaction. Together, these laws form the foundation for our current understanding of motion and provide important insights into the behavior of objects and their interactions with the environment.
