document.write( "Question 400646: A certain .22 caliber gun fires a bullet at a speed of 1192 feet per second. If the .22 caliber gun is fired straight upward into the sky, the height of the bullet in feet is given by the equation , h=-16t^2 +1192t where t is the time in seconds with t=0 corresponding to the instant the gun is fired. How long is the bullet in the air?
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Algebra.Com's Answer #283656 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A certain .22 caliber gun fires a bullet at a speed of 1192 feet per second.
\n" ); document.write( " If the .22 caliber gun is fired straight upward into the sky, the height of
\n" ); document.write( " the bullet in feet is given by the equation , h=-16t^2 +1192t where t is the
\n" ); document.write( " time in seconds with t=0 corresponding to the instant the gun is fired.
\n" ); document.write( " How long is the bullet in the air?
\n" ); document.write( ":
\n" ); document.write( "The bullet will be at h=0 twice, when it is shot and when it returns so we have:
\n" ); document.write( "-16t^2 + 1192t = 0
\n" ); document.write( "factor out -t, results:
\n" ); document.write( "-t(16t - 1192) = 0
\n" ); document.write( "t = 0
\n" ); document.write( "and
\n" ); document.write( "16t = 1192
\n" ); document.write( "t = $\"1192%2F16\"$
\n" ); document.write( "t = 74.5 seconds \n" ); document.write( "

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