document.write( "Question 622431: A ball is dropped from a cliff that is 464 feet high. The distance S (in feet) that it falls in t seconds is given by the formula S = 464 - 16t^2. How many seconds (to tenths) will it take for the ball to hit the ground?\r
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\n" ); document.write( "21.2 sec
\n" ); document.write( "5.4 sec
\n" ); document.write( "21.5 sec
\n" ); document.write( "13,456 sec \n" ); document.write( "
Algebra.Com's Answer #391412 by Alan3354(69443)\"\" \"About 
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A ball is dropped from a cliff that is 464 feet high. The distance S (in feet) that it falls in t seconds is given by the formula S = 464 - 16t^2. How many seconds (to tenths) will it take for the ball to hit the ground?
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\n" ); document.write( "The distance S (in feet) that it falls in t seconds is given by the formula S = 464 - 16t^2.
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\n" ); document.write( "That's not true.
\n" ); document.write( "s in ft = 16t^2 is the distance it falls.
\n" ); document.write( "Its height above the ground = 464 -16t^2
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\n" ); document.write( "At impact, h = 0
\n" ); document.write( "464 - 16t^2 = 0
\n" ); document.write( "t^2 = 29
\n" ); document.write( "t =~ 5.4 seconds
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