document.write( "Question 1136217: A kicker punts the football from 3 feet above the ground with a velocity of 47 feet per second.\r
\n" ); document.write( "\n" ); document.write( "Write an equation that gives the height in feet of the football as a function of the time in seconds since it was punted. \r
\n" ); document.write( "\n" ); document.write( "(a) Find the height in feet of the football 2 seconds after the punt.\r
\n" ); document.write( "\n" ); document.write( "(b) Calculate how many seconds after the punt the ball would hit the ground.\r
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Algebra.Com's Answer #753987 by ikleyn(52872)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "(a)  h(2) = \"-16%2A2%5E2+%2B+47%2A2+%2B3\" = 33 ft.     ANSWER\r\n" );
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document.write( "(b)  Solve the equation\r\n" );
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document.write( "     h(t) = 0, which is  \"-16%2At%5E2+%2B+47t+%2B+3\" = 0.\r\n" );
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document.write( "     \"t%5B1%2C2%5D\" = \"%28-47+%2B-+sqrt%28%28-47%29%5E2+-4%2A%28-16%29%2A3%29%29%2F%28-32%29\" = \"%28-47+%2B-+49%29%2F%28-32%29\".\r\n" );
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document.write( "    Use the positive root  t = \"%2847+%2B+49%29%2F32\" = 3 seconds.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Answered and solved.\r
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\n" ); document.write( "\n" ); document.write( "For completeness, see my previous post\r
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\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1136213.html\r
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\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1136213.html\r
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