Perhaps out of all of his discoveries, the greatest are his three laws of motion and law of universal gravitation. Newton’s law of universal gravitation states that all objects attract one another with a force known as gravity. This helped explain the movement of the planets and other celestial bodies, and their orbit around the sun. (The Physics Classroom) Since the sun has the greatest amount of mass in the solar system, all of the other objects and planets in the solar system are pulled towards it. In 1666, Newton laid down the foundations of his three laws of motion. These laws of motion are used in everyday life and laid the groundwork for future physics developments. His first law may be given thus: “A body remains at rest or, if already in motion remains in uniform motion with constant speed in a straight line, unless it is acted on by an unbalanced external force.” This law of motion is also known as the law of inertia (Latin word meaning “idleness” or “laziness”), for this law refers to how an object at rest without any force acting upon it will remain at rest. It also refers to how an object in uniform motion will remain in uniform motion unless acted on by an outside force. The second law of motion states: “The acceleration produced by a particular force acting on a body is directly …show more content…
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