An aeroplane starts from rest with an acceleration of 3 ms-2 and takes a run for 35s before taking off. What is the minimum length of the runway with what velocity plane take off?

Answer 1

vf=1/2 a t^2=1/2 * 3*35^2 m/s

and
vf^2=2a*Length
or lengthrunway=vf^2/6 m =