document.write( "Question 1171111: I need help solving this word problem. A weight lifting dumbbell is dropped from a height of 80 feet. How long does it take to hit the ground? \n" ); document.write( "

Algebra.Com's Answer #796027 by ikleyn(52778) $\"\"$ $\"About$

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document.write( "Physicist knows which formula to use\r\n" );
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document.write( "    80 = ,\r\n" );
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document.write( "where \"g\" is the free fall acceleration  g = 32 ft/s^, t is the time.\r\n" );
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document.write( "From the formula,  t =  =  =  = 2.236 seconds.\r\n" );
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document.write( "The Algebra student writes practically the same equation\r\n" );
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document.write( "    - + 80 = 0.\r\n" );
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document.write( "He solves it this way\r\n" );
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document.write( "     = 80\r\n" );
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document.write( "     = 80/16 = 5\r\n" );
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document.write( "    t =  = 2.236 seconds\r\n" );
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document.write( "and obtains the same ANSWER.\r\n" );
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\n" ); document.write( "\n" ); document.write( "See the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Introductory lesson 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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