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chem please help drbob222

If the internal energy of an object remains constant, which of the following statements is true regarding the object's potential energy?

A. It remains the same when the object's velocity increases.
B. It decreases when the object's velocity increases.
C. It increases when the object's velocity increases.
D. It will always be zero.

I think the answer is c however I was only able to cross off d.

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Morgan

  1. I agree with c.
    KE = 1/2*m*v^2
    So if v increases, KE MUST increase so dE increases so A ins't right.
    B says it decreases and that's the wrong way so cross B.

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    DrBob222

  2. The answer was b if you were wondering. Thanks anyway you have helped me so much with my chemistry.

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    Morgan

  4. I should have noticed I was calculating KE and the question related to PE. If KE goes up PE of the system goes down so it WAS in the right direction. I sometimes read these things too fast. Sorry about that. Thanks for setting me straight.

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    DrBob222

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