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Racer stagadoosh (stagadoosh)
Race Number 3080
Date Thu, 13 Apr 2017 06:08:09 +0000
Speed 94 WPM Try to beat?
Accuracy 93.8%
Rank 1st place (out of 5)
Opponents guibo (2nd place) nolouzame (5th place) oneguardsam (4th 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)