document.write( "Question 259998: Suppose Charlie O'Brian of the Braves hits a baseball straight upward at 150ft/sec from a height of 5 ft. How long does it take for the ball to return to earth? \n" ); document.write( "
Algebra.Com's Answer #191492 by ankor@dixie-net.com(22740)\"\" \"About 
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Suppose Charlie O'Brian of the Braves hits a baseball straight upward at 150ft/sec from a height of 5 ft.
\n" ); document.write( " How long does it take for the ball to return to earth?
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\n" ); document.write( "Using the equation: h = -16t^2 + 150t + 5, where
\n" ); document.write( "h = height after t seconds
\n" ); document.write( "-16t^2 = downward pull of gravity
\n" ); document.write( "150t = upward rate of the ball
\n" ); document.write( "5 = initial height (where ball was hit)
\n" ); document.write( ":
\n" ); document.write( "-16t^2 + 150t + 5 = 0
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\n" ); document.write( "Using the quadratic formula: a=-16, b=150; c=5
\n" ); document.write( "the positive solution: t ~ 9.41 seconds \n" ); document.write( "
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