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Q: A ball is rolled uphill a distance of 5 meters before it slows, stops, and begins to roll back. The ball rolls downhill 9 meters before coming to rest against a tree. What is the magnitude of the
ball’s displacement? A. 4 meters B. 9 meters C. 14 meters D. 45 meters
A: A. 4 meters .The ball only moved 4 mts away from initial position, regardless of the 9 meter travel.
coolcatrina|Points 443|
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Asked 9/28/2012 11:37:14 PM
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Energy from the sun reaches Earth mostly by A. conduction. B. convection. C. radiation. D. thermal expansion.
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Updated 2/20/2015 2:06:33 PM
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Energy from the sun reaches Earth mostly by RADIATION.

Added 2/20/2015 2:06:31 PM
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