What percentage of the takeoff velocity did the plane gain when it reached the midpoint of the runway? a plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. assume that the plane reaches the required takeoff velocity at the end of the runway. what is the time tto needed to take off?

When is at the end of the runway the velocity of the plane is given by the equation    where s=1800 m is the runway length. Thus
     
 

At half runway the velocity of the plane is
 


Therefore at midpoint of runway the percentage of takeoff velocity is
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