document.write( "Question 1202970: A toy rocket is propelled upward at a speed of 96ft/sec by a machine that is 11 feet off the ground. The height h of the object after t seconds can be found using the function: h (t) = -16t^2 +96t + 11
\n" ); document.write( "What is the height6 of the rocket after 3 seconds and when will the toy rocket reach the height of 122 feet? \n" ); document.write( "

Algebra.Com's Answer #838188 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "To answer first question, substitute t= 3 seconds into the formula and calculate\r\n" );
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document.write( "    h(3) = -16*3^2 + 96*3 + 11.\r\n" );
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document.write( "It is simple arithmetic.\r\n" );
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document.write( "To answer second question, solve this quadratic equation\r\n" );
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document.write( "    -16t^2 + 96t + 11 = 0.\r\n" );
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document.write( "It is equivalent to equation\r\n" );
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document.write( "    16t^2 - 96t - 11 = 0.\r\n" );
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document.write( "Use the quadratic formula. It is simple arithmetic, too.\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
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\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.
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