The system in this particular example is the bird and the earth. The only transfer of energy is from full Potential to Kinetic and some potential. The bird dives down, reducing air friction in an aerodynamic shape. This transfers all of the Energy to Kinetic energy. The formula for the bird's energy would be PEG=KE. Velocity, in meters per second, and mass, in kilograms, are necessary for solving the Kinetic energy as 1/2xv^2, in Joules. The height, in meters, the mass, in kilograms, and the gravitational pull of the earth, 9.8 meters per second squared, are necessary for solving the Potential Gravitational Energy as mgh. That's my story of Energy Transfers and how it relates to the beauty of nature.
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Will--I like your application. It is very creative. Your concluding paragraph is covered partially by the video. To fix that, just move it down a few more lines. I also wished you had included some of the information in you conclusion in the video. All in all, good work.
ReplyDeleteExcellent posting! Love your video.
ReplyDeleteIf you mention air resistance then it should be included in your energy statement as part of internal energy. You will need to modify your system as well but it will make your application more close to real life.
If you want to disregard it then you have to include some disclaimer.
Great job!
Thanks for the advice and I fixed the early typos.
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