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OldEngr63 is offline
Mar2-12, 02:44 PM
P: 343
First off, dynamicists usually speak in terms of acceleration, rather than deceleration.

You question seems to revolve around whether the term refers to the tangential component or the total vector. Unless otherwise specified, I would usually assume that the total vector is implied, but anytime there seems to be confusion, the only option is to ask for clarification.