1. This probably wouldn't go in a Lego forum; Community might be a better spot for academic questions.
2. Are force and time the only information you're given? I haven't done physics in over a year and I'm racking my head as to how to get acceleration from just those 2 variables.
Would it be a better deal financially and content-wise to wait for the whole boxed collection rather than buying DoS and TABA right when they come out on DVD/Blu-Ray?
This should be what you're looking for, not sure if it's the same thread you're talking about: http://www.eurobricks.com/forum/index.php?showtopic=83699