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Change in kinetic energy if only the gravitational force does work (6-17)

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If the only force that does work on a moving object is the gravitational force...then the change in the object's kinetic energy K ...
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{"title":"If the only force that does work on a moving object is the gravitational force...then the change in the object's kinetic energy K...","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"36,10,70,50\"}]"} {"title":"...is equal to the negative of the change in gravitational potential energy U sub grav.","description":"Incorrect","type":"incorrect","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"154,7,193,52\"}]"}

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