Posted by: Neil Zheng to Sciences » AP Physics » Videos » Energy, Work, and Power
Conservation of Energy with "Rockets"
Score: 51robert green says: I admire your commitment to making the sugar rocket work and it makes me sad that it did not. On another note the way you had stuff in the beginning instead of just going into the theoretical situation helped keep the video interesting as a whole.
Connor says: A few comments: I believe that a significant ammount of work is required to achieve the tangential velocity that will allow the rocket orbit the earth instead of just falling back into it. This seems to have been omitted in your calculations, and would be interesting to analyze. We even have the equations to calculate it, I believe! It would be interesting to compare the energy used by your constant mass, dragless, and non-orbiting rocket to the energy used by a real space shuttle.
Chandler Floyd says: I enjoyed the presentation style used in this video. Starting with the footage in the beginning placed the rest of the video in a particular context. In the section where you solved problems relating to conservation of energy, you continued to use the situation that you posed in the beginning of the video. This made the video relatable to the surrounding world even though many variables are omitted.
Paul Reich says: I really enjoyed the style of your video, as it was unique from a lot of the other physics videos with a theoretical problem with no real counterpart. This allowed for an easier understanding of what was occurring in the problem. The many failures also provided a comedic element to your video that I founds helped your video be more entertaining than if you had simply launched them.