1.Rectilinear Motion (Engineering Dynamics)

CHAPTER OBJECTIVES 

■ To introduce the concepts of position, displacement, velocity,
    and acceleration.
■ To study particle motion along a straight line and represent this
    motion graphically.
■ To investigate particle motion along a curved path using different
    coordinate systems.
■ To present an analysis of dependent motion of two particles.
■ To examine the principles of relative motion of two particles
    using translating axes.

Introduction 

Mechanics is a branch of the physical sciences that is concerned with the
state of rest or motion of bodies subjected to the action of forces.
Engineering mechanics is divided into two areas of study, namely, statics
and dynamics. Statics is concerned with the equilibrium of a body that is
either at rest or moves with constant velocity. Here we will consider
dynamics, which deals with the accelerated motion of a body. The subject
of dynamics will be presented in two parts: kinematics, which treats only
the geometric aspects of the motion, and kinetics, which is the analysis of
the forces causing the motion. To develop these principles, the dynamics
of a particle will be discussed first, followed by topics in rigid-body
dynamics in two and then three dimensions.