text: the runway requirements. The minimum take- 
  off distance is obtained by takeoff at some 
  minimum safe velocity which allows sufficient 
  margin above stall and provides satisfactory 
  control and initial 
  rate of climb. Generally, 
  the takeoff speed is some fixed percentage of 
  the stall speed or minimum control speed for 
  the airplane in the takeoff configuration. As 
  such, the takeoff will be accomplished at some 
  particular value of lift coefficient and angle of 
  attack. Depending on the airplane character- 
  istics, the takeoff speed will be anywhere from 
  1.05 to 1.25 times the stall speed or minimum 
  control speed. If the takeoff speed is specified 
  as 1.10 times the stall speed, the takeoff lift 
  coefficient is 82.6 percent of CL- and the angle 
  of attack and lift coeticient for takeoff are 
  fixed values independent of weight, altitude, 
  wind, etc. Hence, an angle of attack indicator 
  can be a valuable aid during takeoff. 
  
  the distance varies directly as the square of the 
  velocity and inversely as the acceleration. 
  
  As an example of this relationship, assume 
  that during takeoff an airplane is, accelerated 
  uniformly 
  to a takeoff 
  velocity of 150 knots (253.5 ft. per sec.) with 
  an acceleration of 6.434 ft. per sec.*(or, 0.2g, 
  since g=32.17 
  takeoff 
  distance would be: 