document.write( "Question 1188917: An object is propelled upward from 12 meters above ground with an initial velocity of 120 meters/second.
\n" ); document.write( "It's height can be modeled by the equation s(t)=-5t^2 +120t+12 meters, where t is time in seconds.
\n" ); document.write( "It's velocity can be modeled by the equation v(t)=-10t+120 meters/second, where t is time in seconds.
\n" ); document.write( "At what velocity did the object hit the ground? \n" ); document.write( "
Algebra.Com's Answer #820115 by Alan3354(69443)\"\" \"About 
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An object is propelled upward from 12 meters above ground with an initial velocity of 120 meters/second.
\n" ); document.write( "It's [sic] height can be modeled by the equation s(t)=-5t^2 +120t+12 meters, where t is time in seconds.
\n" ); document.write( "It's [sic] velocity can be modeled by the equation v(t)=-10t+120 meters/second, where t is time in seconds.
\n" ); document.write( "At what velocity did the object hit the ground?
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\n" ); document.write( "Find t when s(t) = 0
\n" ); document.write( "s(t)=-5t^2 +120t+12 = 0
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\n" ); document.write( "Then solve for v(t).
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\n" ); document.write( "PS it's = it is
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