document.write( "Question 1018970: Use the position function\r
\n" ); document.write( "\n" ); document.write( "\qquad s(t) = -16t^2 + v0t + s_0\r
\n" ); document.write( "\n" ); document.write( "\qquad v_0 = {initial velocity},
\n" ); document.write( " s_0 ={initial position}, t ={time}\r
\n" ); document.write( "\n" ); document.write( "to answer the following question.\r
\n" ); document.write( "\n" ); document.write( "You throw a ball straight up from a rooftop 122 feet high with an initial velocity of 96 feet per second. During which time period will the ball's height exceed that of the rooftop?\r
\n" ); document.write( "\n" ); document.write( "ANSWER: Between
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\n" ); document.write( " seconds. \n" ); document.write( "

Algebra.Com's Answer #634992 by Alan3354(69443) $\"\"$ $\"About$

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You throw a ball straight up from a rooftop 122 feet high with an initial velocity of 96 feet per second. During which time period will the ball's height exceed that of the rooftop?
\n" ); document.write( "-------------
\n" ); document.write( "h(t) = -16t^2 + 96t + 122
\n" ); document.write( "Find t for h(t) = 122
\n" ); document.write( "---
\n" ); document.write( "-16t^2 + 96t + 122 = 122
\n" ); document.write( "-16t^2 + 96t = 0
\n" ); document.write( "t = 0, t = 6
\n" ); document.write( "--> 0 < t < 6
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