document.write( "Question 87296: a firework is luanched upward into the air. at 240ft above the ground. it burst into a shower of stars. how long does it take to reach 240ft? to find the answer, use the equation h=-16t^2+32t in which (h) is the hight above the ground at time (t) in seconds. \n" ); document.write( "

Algebra.Com's Answer #63512 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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a firework is luanched upward into the air. at 240ft above the ground. it burst into a shower of stars. how long does it take to reach 240ft? to find the answer, use the equation h=-16t^2+32t in which (h) is the height above the ground at time (t) in seconds.
\n" ); document.write( ":
\n" ); document.write( "There is something wrong with this problem; 32t represent the velocity and that is not enough for it to ever get to 240 ft
\n" ); document.write( ":
\n" ); document.write( "Max height using the vertex (x = -b/(2a)):
\n" ); document.write( "x = -32/2(-16)
\n" ); document.write( "x = + 1 second is the vertex
\n" ); document.write( ":
\n" ); document.write( "Substitute 1 second in the original equation to find the max:
\n" ); document.write( "h = -16(1^1) + 32(1)
\n" ); document.write( "h = +16 ft is max height
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