| first law of motion | (n) a body remains at rest or in motion with a constant velocity unless acted upon by an external force, Syn. Newton's first law, Newton's first law of motion |
| newton's law of motion | (n) one of three basic laws of classical mechanics, Syn. Newton's law, law of motion |
| second law of motion | (n) the rate of change of momentum is proportional to the imposed force and goes in the direction of the force, Syn. Newton's second law, Newton's second law of motion |
| third law of motion | (n) action and reaction are equal and opposite, Syn. law of action and reaction, Newton's third law, Newton's third law of motion |
| mosaic law | (n) the laws (beginning with the Ten Commandments) that God gave to the Israelites through Moses; it includes many rules of religious observance given in the first five books of the Old Testament (in Judaism these books are called the Torah), Syn. Law of Moses |