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GR8677 #5 |
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Comments |
Blake7
2007-09-11 18:30:50 | The bookkeeping is deceptively simple so get a good night's sleep and commit to the time expenditure in drudge cranking. |  | tercel
2006-12-01 11:18:28 | I'm confused. Why doesn't conservation of energy work to get directly from the initial condition to the solution?
In other words, where does the initial energy,  , go?
VanishingHitchwriter
2006-12-01 14:10:43 |
Not sure if this is what you're asking, but the initial potential energy is converted to kinetic energy. However, when the two objects collide, momentum is transferred, and the velocity is changed (hence kinetic energy changed). The collision is completely inelastic (a la conservation of momentum).
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|  | jax
2005-12-01 09:01:20 | It seems that only 19% of people got this one right, even though it seems easy. I guess most people probably assumed that the collision was elastic, which is not true. I messed up on that one too... ugh I hope I don't do something dumb like that on the exam! :)
dnvlgm
2007-11-11 19:22:58 |
well, it says the particles stick together, I guess most people read too fast or careless and that's a big problem that I honestly have a lot. Gotta be careful! Good luck with your exam!!! :D
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