Newton used them to investigate and explain the motion of many physical objects and systems, which laid the foundation for classical mechanics. The three laws of motion were first stated by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica ( Mathematical Principles of Natural Philosophy), originally published in 1687.
These laws can be paraphrased as follows:
Newton's laws of motion are three basic laws of classical mechanics that describe the relationship between the motion of an object and the forces acting on it.
