I'd just like to add that Velocity is an awesome library and is really well written. If you need static animations it's a great tool, and you should definitely use it.
It seems like such an obvious idea: rather than rely on mathematical guessing games with easing functions, animate the elements at the velocity of the user's gesture and apply physics to that.
Having messed around with 2d games this seems really intuitive and exciting. Nice job and well named.
coderzach, since you're here and responding, how would you compare your library to Velocity? (http://julian.com/research/velocity/)
EDIT: Ah, should've kept reading. The answer is here: http://impulse.luster.io/guides.html