1. In Current Science, acceleration is a change in the speed or direction of motion of a body.
2. In Neu Theory, the term acceleration applies to:
- uniform universal acceleration a of the absolute speed c of the two movement/energy forms spin and rise. This is one of the four fundamental physical quantities of nature, the identity of time and the cause of force.
- the change in speed or direction of motion of a body, relative to a system of reference at speeds less than the speed of light.