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Name: Melissa
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Age: 19
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Question:
Why is the earth's rotational speed decreasing?



Replies:
This is due to what is called tidal friction. It is the reason that the moon has (over billions of years) slowed to one revolution for one rotation and the reason for the very slow rotation of Mercury. The earth is slowing... but very little because of the greater distance from the sun and the greater mass of the earth than the other two examples.

Larry Krengel



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