E. ADDITION OF VECTORS 1. A little bird flies at 5.5 m/s [N 250 E] but the wind is blowing at 0.80 m/s [South]. What is the bird's resultant velocity? 2. A jetliner flies with an airspeed of 665 km/hr directed at [W 57.5. S] The wind speed is 120 km/hr directed at [N 30.0. W] . Airspeed is the speed of the aircraft relative to the air. The air can be moving - i.e. the wind . Wind speed is the speed of the wind relative to the ground . Groundspeed is the velocity of the aircraft relative to the ground. a. Determine the groundspeed of the jetliner. State this as a velocity vector