Question

the required takeoff speed for a large airplane is 180mi/hr(80m/s)the plane is capable of accelerating at a rate of 4m/s^2 assume the plane starts at rest, determine the minimum runway length required for this plane to safely take off, a smaller airplane requires a takeoff speed that is half as much as the large airplane determine the minimum runway length required for this smaller plane to take off

Answer 1

v^2 = 2as, so
s = v^2/2a

now plug in the numbers