Work as the transfer of energy
These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. More free lessons at: http://www.khanacademy.org/video?v=sZG-zHkGR4U In this video, David Santo Pietro explains an alternate way to determine the work done, by figuring out the amount of energy transferred.