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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
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The formula for kinetic energy possesses the expression 'v* *2' and the formula which combines W and E uses 'v * v'. Please use only one of those expressions. Same for '9.81 m/s/s' should be '9.81 m/(s * s)'.
Fixed, thanks!
In the "Examples" section of the description there is a 3rd variable shown -- should be removed:
Had to grab a pen&paper :)