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Racer Batuhan (ftlight)
Race Number 211
Date Fri, 12 May 2017 16:26:52 +0000
Speed 104 WPM Try to beat?
Accuracy 95.9%
Rank 1st place (out of 4)
Opponents smiss (2nd place)

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)