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Physics 17 Online
OpenStudy (anonymous):

A ball is thrown directly downward with an initial speed of 8.00 m/s, from a height of 30.0 m. After what time interval does it strike the ground?

OpenStudy (anonymous):

http://answers.yahoo.com/question/index?qid=20090623182705AArZWg9 let me know if you need more of an explanation.

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