Sir Isaac Newton's First Law of Motion states that an object in motion will stay in motion and an object at rest will stay at rest unless acted on by an outside force. This law is also known as the law of inertia, and it is a fundamental law of physics. Many everyday occurrences can be explained by this law, such as why a car in motion will not just suddenly stop unless something else (like a brake or another car) acts on it. This law also explains why a person riding a bicycle will not just fall off the bike if they stop pedaling. Newton's First Law of Motion is a powerful law that provides a foundation for understanding and predicting many physical phenomena. By studying this law, students can gain a deeper understanding of the world around them.