The Accident Reconstruction Dictionary Welcome to the Accident Reconstruction Dictionary. This section is in it's early stages. The ARC Network will be continually updating this section and adding additional terms until we build a complete Accident Reconstruction Dictionary.
Values are either positive or negative with standard orientation.
It is often used to describe rotating objects. The angular momentum of an object is defined to be equal to its mass times its velocity about the point times its distance from that point. It is constructed of an asphalt and rock mixture and is black in appearance. The axis of rotation for a spinning record is its middle. The reference point for angular momentum is often chosen to be along the axis of rotation.