document.write( "Question 1042056: Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
\n" ); document.write( " A rocket is launched from atop a 76-foot cliff with an initial velocity of 135 ft/s.
\n" ); document.write( " a. Substitute the values into the vertical motion formula h=-16t2+vt+c Let h = 0.
\n" ); document.write( "b. Use the quadratic formula find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second. \n" ); document.write( "

Algebra.Com's Answer #656977 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
\n" ); document.write( " A rocket is launched from atop a 76-foot cliff with an initial velocity of 135 ft/s.
\n" ); document.write( " a. Substitute the values into the vertical motion formula h=-16t2+vt+c Let h = 0.
\n" ); document.write( "b. Use the quadratic formula find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second.
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document.write( "The equation after substitution is\r\n" );
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document.write( " = \r\n" );
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document.write( "( 135 goes as \"v\", 76 goes as \"c\" ).  It is your answer to question a).\r\n" );
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document.write( "To answer question b), solve this quadratic equation\r\n" );
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document.write( " = \r\n" );
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document.write( "and take the positive root.\r\n" );
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\n" ); document.write( "\n" ); document.write( "For more similar solved problems see 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
\n" ); document.write( "\n" ); document.write( "in this site.\r
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