Normal and Tangential Coordinates
et : unit tangent
to the path
en : unit normal
to the path
eb : unit
bi-normal to the path ()
Velocity:
Acceleration:
ã Mehrdad Negahban and the University
of Nebraska, 1999-2000.
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rights reserved
Copy
and distribute freely for personal use only
Department
of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588-0526