document.write( "Question 1182626: NASA launches a rocket at t=0 seconds. It’s height, in meters above sea level, as function of time is given by h(t)=-4.9^2+208t+339.
\n" ); document.write( "Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?
\n" ); document.write( "The rockets splashes down after ____seconds
\n" ); document.write( "How high above sea level does the rocket get at its peak?
\n" ); document.write( "The rocket peaks at _____ meters above sea level. \n" ); document.write( "
Algebra.Com's Answer #812721 by mananth(16946)\"\" \"About 
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NASA launches a rocket at t=0 seconds. It’s height, in meters above sea level, as function of time is given by h(t)=-4.9t^2+208t+339.\r
\n" ); document.write( "\n" ); document.write( "solve by formula method the quadratic equation\r
\n" ); document.write( "\n" ); document.write( "Roots: 44.02, -1.57
\n" ); document.write( "Ignore negative
\n" ); document.write( "It will splash after 40.02 s\r
\n" ); document.write( "\n" ); document.write( "How high above sea-level does the rocket get at its peak?
\n" ); document.write( "Maximum height occurs when t = -b/(2a)
\n" ); document.write( "
\n" ); document.write( "= -208/((2)(-4.9))
\n" ); document.write( "=21.22\r
\n" ); document.write( "\n" ); document.write( "f(21.22) = -4.9*(21.22)^2 +(208 *21.22) + 339 =2546 m\r
\n" ); document.write( "\n" ); document.write( "Maximum height = 2546 m above sea level\r
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