document.write( "Question 126358: A ball is thrown downward from a window in a tall building. Its position at time \"t\" in seconds is s = 16t^ + 32t, where \"s\" is in feet. How long (to the nearest tenth) will it take the ball to fall 137 feet?\r
\n" ); document.write( "\n" ); document.write( "in equation \"16t^\" means 16 t squared.\r
\n" ); document.write( "\n" ); document.write( "iF anyone could help that would be great!
\n" ); document.write( "thanks. \n" ); document.write( "

Algebra.Com's Answer #92571 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
s = 16t^ + 32t, where \"s\" is in feet. How long (to the nearest tenth) will it take the ball to fall 137 feet?
\n" ); document.write( "-----------------------------------
\n" ); document.write( "s(t) = -16t^2s-32t+137
\n" ); document.write( "When the object hits the ground its height is zero
\n" ); document.write( "-16t^2-32t+137 = 0
\n" ); document.write( "t = [32 +- sqrt(32^2-4*-16*137)]/(-32)\r
\n" ); document.write( "\n" ); document.write( "t = [32 +- sqrt(9792)]/-32\r
\n" ); document.write( "\n" ); document.write( "t = [32 +- 98.954]/-32\r
\n" ); document.write( "\n" ); document.write( "Positive Answer
\n" ); document.write( "t = 2.0923..
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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