document.write( "Question 593997: a rocket is launched from an 18-foot cliff with an initial velocity of 80 feet per second. the height above the ground of the rocket t seconds after launch is given by the equation h= -16^2+80t+18. hjow long after the rocket is launched will it hit the ground? round your answer to the nearest tenth. \n" ); document.write( "
Algebra.Com's Answer #376580 by Alan3354(69443)\"\" \"About 
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a rocket is launched from an 18-foot cliff with an initial velocity of 80 feet per second. the height above the ground of the rocket t seconds after launch is given by the equation h= -16^2+80t+18. hjow long after the rocket is launched will it hit the ground? round your answer to the nearest tenth.
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\n" ); document.write( "It's when h = 0.
\n" ); document.write( "h= -16^2+80t+18 = 0
\n" ); document.write( "Solve for t.
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\n" ); document.write( "Why is this called a rocket? It has no engine, doesn't accelerate.
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