Walter & Group :
Walter....
OK....Now THAT is crystal clear !!!!
Thanks !
'Gordy
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Gordy - from a physics standpoint:
SPEED = distance / time. Speed is a scalar (i.e. does not depend on direction)
quantity with dimesions distance per time. It is independent of the
co-ordinate system you are using.
VELOCITY - is speed in a particular direction. It is a vector quantity as both
speed and direction are required to define it.
ACCELERATION - the rate of change of velocity (not speed) with respect to time.
Since velocity consists of speed and direction the change in velocity may
also be speed and/or direction. Acceleration is also a vector quanity.
ACCELERATE - is to change the velocity of an object. Accelerate is the action/verb
form of ACCELERATION.
Engineers are discouraged from using the terms velocity and speed together because
of the potential for confusion. Noel Perkins, being at the post doctoral level, isn't
held to the same restriction. It's similar to talking about wrist action at the
beginner, intermediate and advanced caster levesl.
Cheers
Walter
----- Original Message -----
From: Gordon Hill <masterstudy@xxxxxxxxxxx>
Date: Wednesday, June 21, 2006 1:09 pm
Subject: Common vs. engineering terms