document.write( "Question 1107103:
\n" ); document.write( "A rocket is fired upward from some initial distance above the ground. Its height in​ feet, h,above the​ ground, t seconds after it is​ fired, is given by h=-16t^2+48+4320.
\n" ); document.write( "What is the​ rocket's maximum​ height? \r
\n" ); document.write( "\n" ); document.write( "How long does it take for the rocket to reach its maximum​ height? \r
\n" ); document.write( "\n" ); document.write( "After it is​ fired, the rocket reaches the ground at t= sec. \n" ); document.write( "
Algebra.Com's Answer #722117 by ikleyn(52873)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "A rocket is fired upward from some initial distance above the ground. Its height in​ feet, h,above the​ ground,
\n" ); document.write( "t seconds after it is​ fired, is given by h=-16t^2+48+4320.
\n" ); document.write( "What is the​ rocket's maximum​ height? \r
\n" ); document.write( "\n" ); document.write( "How long does it take for the rocket to reach its maximum​ height? \r
\n" ); document.write( "\n" ); document.write( "After it is​ fired, the rocket reaches the ground at t= sec.
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\n" ); document.write( "\n" ); document.write( "In the post,  you  INCORRECTLY  presented the height function.\r
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\n" ); document.write( "\n" ); document.write( "The correct formula is   h(t) = -16t^2 + 48t + 4320.\r
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\n" ); document.write( "\n" ); document.write( "So,  double check with your sources.\r
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\n" ); document.write( "\n" ); document.write( "In this formula,  the coefficient at  \"t\"  is the initial velocity  (the positive direction is vertically up); \r
\n" ); document.write( "\n" ); document.write( " the constant term is the initial height of the launch. \r
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\n" ); document.write( "To see many similar solved problems of this type and to learn on how to solve them,  look into the 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( "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( "And if you REALLY want to benefit from this forum,  please / PLEASE /  be attentive and accurate when you prepare your post . . . \r
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document.write( "    I understand that EVERYBODY can make a typo - it is not a crime.\r\n" );
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document.write( "    But it is your DUTY to look on the text after posting, and if you see an error, then you can edit and fix your post.\r\n" );
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document.write( "    Finally and lastly, it is YOUR RESPONSIBILITY to provide a correct input for tutors.\r\n" );
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document.write( "From my side, I think that it is TOO MUCH for the tutor to edit your writing and then to work on the solution.\r\n" );
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document.write( "Nevertheless, I do it from time to time. I do it EACH time when I see interesting problem behind the defective post.\r\n" );
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document.write( "But when the \"student\" submit very typical / routine problem with errors, my thoughts are:\r\n" );
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document.write( "\"If he (or she) is not able to provide the correct input, what is the reason for me to make my efforts ?\"\r\n" );
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document.write( "Or even, \"what is the reason for me to make my efforts, when I clearly see that on the opposite side the person does understand \r\n" );
document.write( "NEITHER the problem itself NOR what he (or she) is writing ?\"\r\n" );
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document.write( "Or even \"if he (or she) doesn't care about it ?\"\r\n" );
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