Explaining The Universe on Instagram: "Newton’s First Law of Motion, also called the law of inertia, states that an object will remain at rest or continue to move in a straight line at a constant speed unless acted upon by an external force. In other words, if no net force acts on an object, its velocity does not change. This law highlights the natural tendency of objects to resist changes in their motion. For example, a hockey puck sliding on ice will keep moving in a straight line until fricti