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Posted by on Thursday, January 7, 2010 at 5:47pm.

As an object slides across a rough horizontal surface, what happens to the object's gravitional potential energy with respect to the surface and speed?

Would't potential energy decrease at rest?

  • Physics - , Thursday, January 7, 2010 at 5:53pm

    How can GPE decrease on a horizontal surface? The distance to the center of the Earth is the same, that is what determines GPE.
    GPE does not change on the horizontal surface.

  • Physics - , Thursday, January 7, 2010 at 5:54pm

    Would speed increase?

  • Physics - , Thursday, January 7, 2010 at 6:13pm

    I know speed would increase when potential energy decreases but in this case its different. Therefore, if potential energy is remaining the same wouldnt speed remain the same too

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