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# Planet X Gravity

Pro Problems > Physics > Energy and Work > Work

## Planet X Gravity

On Planet X, a car does 405,000 J of work increasing its speed from 15 m/s to 30 m/s on a horizontal surface. It then does 96,000 J of work driving up a 25 meter hill at a constant speed. If an object is dropped from a height of 1000 meters on Planet X, how fast will it be traveling when it reaches the ground? Assume no air resistance on Planet X.

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Problem by Mr. Twitchell

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