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First mechanics screencasts!

Allen Brown is working on screen casting some of the introductory physics problems we did "writing hand" videos of last semester.  Much higher production values! 

Hopefully they will see great use.

We have:

Finding the magnitude and direction of a vector.

Adding force vectors together and using F=ma.

Projectile motion explored by throwing darts.

and problem that beginning students often have special trouble with:

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