document.write( "Question 122751: Solve.\r
\n" ); document.write( "\n" ); document.write( "a ball is thrown upward from the roof of a building 100 m tall with an initial velocity of 20 m/s. When will the ball reach a height of 80 m?
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Algebra.Com's Answer #90149 by GSems22(3)\"\" \"About 
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After one Second the Ball will reach a height of 80m \n" ); document.write( "
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