From: "Andrew J Robb" <AJRobb AT bigfoot DOT com>
Newsgroups: comp.lang.c++,comp.os.msdos.djgpp
Subject: Re: How to implement "They are all Vectors, but different realities?"
Date: Thu, 21 Jan 1999 09:12:09 -0000
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

You can use dimensional analysis where units have powers of mass, length and
time.

velocity -> L-T
acceleration -> L-2T
mass -> M
f=ma gives force = ML-2T

There are issues including:
work = force * distance (OK - its actually an integral)
torque = force * distance
Thus different values can have the same dimensions.  I have seen this
handled by having instance numbers to differentiate between them.

You might want to look at quaternion values to hold the vectors.