document.write( "Question 302436: If an object is propelled upward from ground level with an initial velocity of 224 feet per second, its height h in feet t seconds later is given by the equation h = 224t - 16t2. After how many seconds does the object hit the ground? \n" ); document.write( "
Algebra.Com's Answer #216827 by Alan3354(69443)\"\" \"About 
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When h = 0
\n" ); document.write( "\"224+-+16t%5E2+=+0\"
\n" ); document.write( "t = 0 at the start
\n" ); document.write( "t = 14 seconds at impact\r
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