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Thank you for clarifying the use of ClearAll. What happens is that when DSolve finds a solution, which has happened when I don't use units, it asks if you want to convert that solution into a function. Once you pick that option, you get a function....
Here we go again! For some reason in the definition of velocity time is getting the units of s^2. I figured it out.
I have been using Mathematica 9 available as a shared application from the university where I teach. I installed a trial version of Mathematica 10, decided it was not worth the money, and uninstalled it when the trial ran out. I have since discovered...
I emailed tech support. You are just much more responsive than they are. At stackexchange.com the suggestion was to remove wireless components so I installed the demo on my laptop that has a hard-wired monitor, keyboard, and touchpad, and running...
If you download the "Author Code" from the link in the upper right hand side of [http://demonstrations.wolfram.com/FractalCurves/][1] or use this link (which is the link from that page) ...
Thank you!