The takeoff speed for an Airbus A320 jetliner is 74m/s . Velocity data measured

Question

The takeoff speed for an Airbus A320 jetliner is 74m/s . Velocity data measured during takeoff are as follows: t(s) 0 10 20 30 40 Vx (m/s) 0 20 40 60

At what time do the wheels leave the ground?

Express your answer using two significant figures.

For safety reasons, in case of an aborted takeoff, the length of the runway must be three times the takeoff distance. What is the minimum length runway this aircraft can use?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

a = 2m/s

v = 74m/s

74 = 2t

t = 37sec

s = 1/2*2*37^2 = 1369 m

length of runway = 3*1369 = 4107m

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