The Warrior can take off when its airspeed (speed of the air flowing over the wing) is equal to 100 km/hr. What is the length of runway, in meters, required for the plane to take off if there is a 12 km/hr head wind? Note: the shortest runway at the Rochester International Airport has a length of 1000 m. Take the acceleration from the the answer of the previous question. The acceleration from past problem was .444444444444444m/s^2(adsbygoogle = window.adsbygoogle || []).push({});

Okay so first I set

100=-12+.444444444t

then 112=.444444444t

convert 112 to m/s

31.1111111=.4444444444t

t=70

then I use that time in

x=-3.333t+(1/2)(.44444444)t^2

and solve for x right? and I get

855.57m as the length of the runway but this is incorrect so where exactly is my mistake?

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# Homework Help: Where is my mistake?

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