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change in Gravitational Potential Energy (GPE)
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by
 oωo A м ι к о ♥
on 06:17:08 pm 11/17/09 (edited 06:22:58 pm 11/17/09)
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our teacher wrote that when an object is lifted up from a Planet the change in GPE is negative and that when the object falls onto the planet.. the change in GPE is positive but I keep getting the opposite answers (lifted up from a Planet GPE is positive) I'm really confused x.x I was planning her ask her today but there was a sub (sub didn't know anything) and we have the test tomorrow... so please help me if anyone understands >< thanks lots!  |
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Re: change in Gravitational Potential Energy (GPE)
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on 06:31:09 pm 11/17/09 |
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Your are right. Higher objects have more potential energy. This energy is turned into kinetic energy as the object falls. 
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Re: change in Gravitational Potential Energy (GPE)
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by
oωo A м ι к о ♥
on 06:34:40 pm 11/17/09 |
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thanks so much!!! my teacher was probably in a hurry =) yay thanQ!! |