This article provides practical examples for 50 most frequently used commands in Linux / UNIX. This is not a comprehensive list by any means, but this should give you a jumpstart on some of the common Linux commands. Bookmark this article for your future reference.
Some physics formulas that will be useful in kinematics. Not a truly complete list of formulas though, as some things are missing.I can't think of any more formulas for this cheat sheet though, so suggestions on what to add would be helpful.