document.write( "Question 1156022: A penny is dropped off the Empire State Building which is 1250 feet tall. If the penny's pathway can be modeled by the equation h=-16t^2+1250, how long would it take the penny to strike a 6 foot tall person? \n" ); document.write( "

Algebra.Com's Answer #778785 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "They want you solve this quadratic equation\r\n" );
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document.write( "    h(t) = 6,  which is  -16t^2 + 1250 = 6,\r\n" );
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document.write( "    16t^2 = 1250-6 = 1244\r\n" );
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document.write( "     t^2 =  = 77.75\r\n" );
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document.write( "     t =  = 8.82 seconds (approximately).    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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