document.write( "Question 276918: Help. I'm totally perplexed by the question: An angry construction worker throws his wrench downward from a height of 128 feet with an initial velocity of 32 feet per second. The height of the wrench above the ground after 6 seconds is given by S(t) = -16t^2 -32t +128.\r
\n" ); document.write( "\n" ); document.write( "What is the height after 1 second? How long does it take for the wrench to reach the ground? \n" ); document.write( "
Algebra.Com's Answer #201731 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
An angry construction worker throws his wrench downward from a height of 128 feet with an initial velocity of 32 feet per second.
\n" ); document.write( "The height of the wrench above the ground after 6 seconds is given by
\n" ); document.write( "S(t) = -16t^2 -32t +128.
\n" ); document.write( "What is the height after 1 second?
\n" ); document.write( "S(1) = -16-32+128 = 80 ft.
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\n" ); document.write( "How long does it take for the wrench to reach the ground?
\n" ); document.write( "Solve -16t^2 -32t + 128 = 0
\n" ); document.write( "Divide thru by -16 to get:
\n" ); document.write( "t^2 + 2t - 8 = 0
\n" ); document.write( "---
\n" ); document.write( "(t+4)(t-2) = 0
\n" ); document.write( "Positive solution:
\n" ); document.write( "t = 2 seconds
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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