document.write( "Question 1115556: A rocket is fired upward from some initial distance above the ground. its height in feet, h, above the ground, t, seconds after it is fired, is given by h= -16t^2+112t+1568.
\n" ); document.write( "1.What is the rockets maximum height?
\n" ); document.write( "2.How long does it take for the rocket to reach its maximum height?
\n" ); document.write( "3.After it is fired, the rocket reaches the ground at t=___?\" \n" ); document.write( "
Algebra.Com's Answer #730458 by Alan3354(69443)\"\" \"About 
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A rocket is fired upward from some initial distance above the ground. its height in feet, h, above the ground, t, seconds after it is fired, is given by h= -16t^2+112t+1568.\r
\n" ); document.write( "\n" ); document.write( "1.What is the rockets maximum height?
\n" ); document.write( "The max height is at the vertex of the parabola. Do you know how to find that?
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\n" ); document.write( "2.How long does it take for the rocket to reach its maximum height?
\n" ); document.write( "See #1.
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\n" ); document.write( "3.After it is fired, the rocket reaches the ground at t=___?\"
\n" ); document.write( "At impact, h(t) = 0
\n" ); document.write( "Solve for t, ignore the negative solution.
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\n" ); document.write( "PS A rocket has thrust, and does not follow a parabola.
\n" ); document.write( "This is a projectile.
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