Terminology and Definitions

This subsection provides a list of terms that are used in the subsequent sections and their meaning, with the purpose of reducing ambiguity and making it easier to correctly understand the requirements.

• Rigid body: A solid body in which deformation is neglected.
• Elasticity: The ratio of the relative velocities of two colliding objects after and before a collision.
• Centre of mass: The mean location of the distribution of mass of the object.
• Cartesian coordinate system: A coordinate system that specifies each point uniquely in a plane by a set of numerical coordinates, which are the signed distances to the point from two fixed perpendicular oriented lines, measured in the same unit of length (from cartesianWiki).
• Right-handed coordinate system: A coordinate system where the positive z-axis comes out of the screen..
• line: An interval between two points (from lineSource).
• point: An exact location, it has no size, only position (from pointSource).
• damping: An influence within or upon an oscillatory system that has the effect of reducing, restricting or preventing its oscillations (from dampingSource).