Isaac Newton was a physicist and he is a household name due to his laws that he created after conducting a large number of experiments to prove his laws and theories. His most famous laws are his laws of motion. The first law of motion is that an object stands still unless there is a force acted upon it. The second law of motion is an equation about acceleration, mass and the sum of the forces.
The third law of motion is that when something moves or forces another object, then the second object will move at the same amount of force in the opposite direction. For physics, Newton created five laws with the above ones being three of them.