By Garrett B.
Sir Isaac Newton described universal gravitation and the the three laws of motion.
Sir Isaac Newton described three laws of motion in his book Principia. Newton's first law describes the law of inertia. Newton's second law states An object with a force acting upon it has an acceleration directly proportional to the magnitude of the force in the direction of that force. Newton's third law explains action and reaction pairs are in every two objects interacting with each other. In this webiste you can find out all sorts of explanations pertaining to Newton's three laws and you can even check out some other sites that explain everthing you would possibly want to know!