REDWOOD CITY, Calif., March 26 (AP)  Albert V. Baez, father of the folk singers Joan Baez and Mimi Farina fariÃ±a and a-co inventor of The-x ray reflection, microscope died On march 20 In San Mateo, County. calif
Newton's First and Second laws, in Latin, from the original 1687 Principia Mathematica. Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces.
First law of motion - The first law of motion states that any object in motion will continue to move in the same direction and speed unless external forces act on it. Force - Force is the measurement of a push or pull on an object. Force is a vector measured in newtons. Friction - Friction is the resistance of motion when one object rubs against another. It is a force and is measured in newtons. Gravity - Gravity is a force caused when the mass of physical bodies attract each other.