Explainer Zone on Instagram: "Newton’s First Law of Motion, also known as the Law of Inertia, explains that an object will stay at rest or keep moving in a straight line at a constant speed unless acted upon by an external force. In simple terms: nothing starts, stops, or changes direction on its own — something has to make it. . . . Media : ( How Ridiculous ) . . . #newton #lawofinertia #physics #instaexplore #learn #fypage #biggerz @biggerz"