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Racer Orobus (orobusthedog)
Race Number 13
Date Fri, 7 Apr 2017 22:17:02 +0000
Speed 101 WPM Try to beat?
Accuracy 97.2%
Rank 1st place (out of 2)

Text typed:

In two dimensions we say that a rigid body has only one rotational degree of freedom, whereas in three dimensions we say that a rigid body has three rotational degrees of freedom. This might lead you to infer that in three dimensions you need to have three scalar quantities to represent a body's rotation. Indeed, this is the minimum requirement.
Physics for Game Developers (book) by David M Bourg (see stats)