document.write( "Question 946927: A ball is thrown into the air with the in initial upward velocity of 45 ft/s. It's height (h) in feet after t seconds is given by the function h=- -16t^2+45t+6. After about how many seconds will the ball hit the ground? \n" ); document.write( "
Algebra.Com's Answer #577702 by Alan3354(69443)\"\" \"About 
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When -16t^2+45t+6 = zero (0). \n" ); document.write( "
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