document.write( "Question 1165248: The height of an object dropped from the roof of an eight story building is modeled by: h(t) -9t^2 + 81, 0 \n" ); document.write( "

Algebra.Com's Answer #789720 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "In your post, EVERYTHING IS WRONG.\r
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document.write( "One the Earth, where we live, the right equation for the free fall is\r\n" );
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document.write( "    h(t) = -4.9*t^2 + 81,   (if the initial height is 81 meter)\r\n" );
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document.write( "where h(t) is the height in METERS (NOT IN FEET).\r\n" );
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document.write( "In feet,\r\n" );
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document.write( "    h(t) = - 16*t^2 + 81      (if the initial height is 81 feet)\r\n" );
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\n" ); document.write( "\n" ); document.write( "Learn the subject BEFORE trying to compose your own problems.\r
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\n" ); document.write( "\n" ); document.write( "Learn the subject from these lessons\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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\n" ); document.write( "\n" ); document.write( "Do not forget to post your THANKS to me for my teaching.\r
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