1. Airport B is directly east of Airport A. An airplane flies starting at Airport A in a straight line of 537.3 km. At this point, the airplane is 143.7 km directly north from Airport B. a) Calculate the direction of the 537.3 km line.

b) Calculate the displacement from Airport A to Airport B.

2. A car is travelling on a road with an initial velocity of 24.1m/s[13.0 degrees S of W]. The car turns into another road and goes at a final velocity of 14.5m/s[13.0 degrees W of S]. Calculate the average acceleration of the car if the turning motion took 3.69 seconds.

3. The wind gave a bird an average acceleration of 8.75m/s^2[W], such that its final velocity is 16.7 m/s[S]. If the average acceleration took a time of 1.28 seconds, calculate the initial velocity of the bird.