document.write( "Question 757737: Tom hits a volleyball at an equation like y=16t^2+31t+2. After how much time will it take for the volleyball to hit the ground? \n" ); document.write( "
Algebra.Com's Answer #461060 by stanbon(75887)\"\" \"About 
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Tom hits a volleyball at an equation like y=-16t^2+31t+2. After how much time will it take for the volleyball to hit the ground?
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\n" ); document.write( "y is the height of the ball at time = t seconds.
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\n" ); document.write( "Height is zero when ball hits the ground:
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\n" ); document.write( "-16t^2+31t+2 = 0
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\n" ); document.write( "t = [-31 +- sqrt(31^2-4*-16*2)]/(-32)
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\n" ); document.write( "Find the Positive solution.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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