document.write( "Question 76827: a hammer is dropped from a construction project 576 ft above the ground. the height h(in ft) of the hammer is mideled by the position equation h(t)=-16t^2+ 576 where t is the time i seconds. how long will take for the hammer to reach the ground? \n" ); document.write( "

Algebra.Com's Answer #55076 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "a hammer is dropped from a construction \r\n" );
document.write( "project 576 ft above the ground. the height \r\n" );
document.write( "h(in ft) of the hammer is mideled by the \r\n" );
document.write( "position equation  where t \r\n" );
document.write( "is the time in seconds. how long will take \r\n" );
document.write( "for the hammer to reach the ground?\r\n" );
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document.write( "Plug in  \r\n" );
document.write( "That's because when it hits the ground its \r\n" );
document.write( "height above the ground is 0.\r\n" );
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document.write( "   \r\n" );
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document.write( "Divide both sides by 16:\r\n" );
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document.write( "    \r\n" );
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document.write( "Take positive square roots of both sides:\r\n" );
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document.write( "     \r\n" );
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document.write( "Answer: the hammer hits the ground in 6 seconds.\r\n" );
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document.write( "Edwin

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