document.write( "Question 763002: I stand on a building 640 feet high and throw a rock into the air with a velocity of 96ft/sec. When does the rock have a height of 100 feet? \n" ); document.write( "
Algebra.Com's Answer #464495 by Alan3354(69443)\"\" \"About 
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I stand on a building 640 feet high and throw a rock into the air with a velocity of 96ft/sec. When does the rock have a height of 100 feet?
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\n" ); document.write( "You have to supply the function of height vs. time.
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