document.write( "Question 1182717: A plane requires a speed of 100km/h at takeoff to be airborne. If it can be
\n" ); document.write( "accelerated at the rate of 8000 km/h^2, what should be the minimum length of runway if the plane starts with zero velocity at one end of the runway? \n" ); document.write( "

Algebra.Com's Answer #812799 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "We find the time from this equation\r\n" );
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document.write( "    v = at,\r\n" );
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document.write( "where v is the given speed at the end of the runway;  a is the given acceleration.\r\n" );
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document.write( "So the time for takeout is\r\n" );
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document.write( "    t =  =  =  = 0.0125  hours.     ANSWER\r\n" );
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document.write( "The minimum length of the runway should be\r\n" );
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document.write( "    d =  =  = 0.625 kilometers = 625 meters.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "I used the standard formulas of Physics (kinematic), which every student must know, when he or she start learning the subject.\r
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