document.write( "Question 1157133: A ball is thrown vertically upward from the ground with an initial velocity of 103 feet per second. What will be the ball's maximum height? \n" ); document.write( "
Algebra.Com's Answer #779948 by ikleyn(52782)\"\" \"About 
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document.write( "You write the equation for the height\r\n" );
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document.write( "    h(t) = -16*t^2 + 103t.     (1)\r\n" );
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document.write( "From the general theory of the maximum of quadratic function you find the time for reaching the maximum\r\n" );
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document.write( "    t = \"%28-103%29%2F%282%2A%28-16%29%29\" = 3.218 seconds.\r\n" );
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document.write( "Then you substitute this value  t= 3.218 seconds for time into equation (1), and you get\r\n" );
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document.write( "    \"h%5Bmaximum%5D\" = -16*3.218^2 + 103*3.218 = 165.77 feet.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "In this site,  there is a bunch of lessons on a projectile thrown/shot/launched vertically up\r
\n" ); document.write( "\n" ); document.write( "    - Problem on a projectile moving vertically up and down\r
\n" ); document.write( "\n" ); document.write( "    - Problem on an arrow shot vertically upward\r
\n" ); document.write( "\n" ); document.write( "    - Problem on a ball thrown vertically up from the top of a tower \r
\n" ); document.write( "\n" ); document.write( "    - Problem on a toy rocket launched vertically up from a tall platform\r
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\n" ); document.write( "\n" ); document.write( "Consider these lessons as your textbook,  handbook,  tutorials and  (free of charge)  home teacher.
\n" ); document.write( "Read them attentively and learn how to solve this type of problems once and for all.\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic \"Projectiles launched/thrown and moving vertically up and dawn\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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