Kevin
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 Mar 1 awarded Notable Question Apr 19 awarded Civic Duty Sep 10 awarded Popular Question Jul 8 awarded Autobiographer May 29 comment Is there always a frame in which spatially separated events are simultaneous? If you were typing your post a couple of light-centuries away from Washington's birthplace... Sep 9 comment Are the air particles in today's wind on earth (more or less) the same as the air 2/3 billion years ago? One question you didn't discuss in your answer is whether Earth has gained or lost significant amounts of air in space. Can you please add information about that? Feb 27 accepted Finding maximum speed in a work-energy problem Feb 27 comment Finding maximum speed in a work-energy problem To be honest, I don't understand how to use conservation of energy to solve the problem. Can you give me the first couple of steps in that part of the solution? Feb 27 comment Finding maximum speed in a work-energy problem @Akash I don't know. This problem was given to me in an on-line homework assignment, and it tells me when I'm wrong, but doesn't let me know what answer I should get >_< Feb 27 comment Finding maximum speed in a work-energy problem One thing that I just noticed is that 148.3 m is the distance up from the bottom of the drop, not down from the top of the drop. Correcting for this mistake doesn't get me the right answer, though, so my approach is still wrong... Feb 27 asked Finding maximum speed in a work-energy problem Feb 19 comment Why isn't average speed equal to displacement over time? +1 for answering the question in a way that's relatively easy to understand, considering that the OP is an introductory student. Feb 13 awarded Scholar Feb 13 accepted How can I understand work conceptually? Feb 12 awarded Student Feb 12 comment How can I understand work conceptually? This website has an excellent definition of work: hyperphysics.phy-astr.gsu.edu/hbase/hframe.html This chart from the same website explains how work relates to other mechanical concepts: hyperphysics.phy-astr.gsu.edu/hbase/hframe.html Feb 12 awarded Supporter Feb 12 asked How can I understand work conceptually?