Relativistic mechanics refers to mechanics studied in special and general relativity. It provides a non-quantum mechanical description of a system of particles or fluid. The foundations of relativistic mechanics are the general questions of special relativity and general relativity.
Relativistic mechanics can be divided into kinematics; the description of motion, and dynamics; a full description by considering energies. However, in what appears to be moving and what is at rest, is in terms by static in classical mechanics. This depends on the relative motion of observers who measure in frames of reference. Relativistic mechanics depends on three dimensional vector calculus to explain basic principals.