The basic concepts of mechanics are space, time, and mass or force, which are m
or less understood intuitively by most beginning students. To be useful for quantitative analysis, however, these notions must be viewed as mathmatical concepts related to each other by fundamental laws. Such a formulation was introduced by Sir Isaac Newton (1642-1727) in his three laws of motion which have become the foundation for the class or Newtonian Mechanics. Newton's laws were formulated for a single particle. Our notion of a pu is that of a material body of infinitely small dimensions. In mechanics can expand this motion to include any material body whose dimensions small in comparison with distances or lengths involved in defining its pos or motion Thus can be considered to be particles when then t position in the system is under consideration. In defining the of a particle in space.