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Dynamics may be broken down into kinematics and kinetics. Kinematics deal with displacement,
velocities and accelerations without concern for the forces involved. Kinetics deal with the forces

and moments involved in making the body move along with the measurement of various
parameters describing the motion.

1.2.3 SPACE

Space is the geometric region occupied by bodies and their position are described by linear and

angular measurements relative to coordinate system.

1.2.4 PARTICLES

Particle is a body which has a mass but negligible its dimension. In mathematics, a particle can be
defined as a body which is the dimensions approach zero so that it can be treated as a point mass.

Figure 1.3: Particles

1.2.5 RIGID BODY

A body is said to be a rigid body when the relative movements between its parts that make up the

body are negligible when certain amount of force or load is applied to the body. In other words, it
can be said that distance between the principles that make up the body remain unchanged before

and after applying a load.

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