1. Find the acceleration:

* Change in velocity: 145 m/s - 75 m/s = 70 m/s

* Time: 15 seconds

* Acceleration: (Change in velocity) / (Time) = 70 m/s / 15 s = 4.67 m/s²

2. Calculate the average velocity:

* Initial velocity: 75 m/s

* Final velocity: 145 m/s

* Average velocity: (Initial velocity + Final velocity) / 2 = (75 m/s + 145 m/s) / 2 = 110 m/s

3. Determine the distance traveled:

* Distance: (Average velocity) * (Time) = 110 m/s * 15 s = 1650 meters

Therefore, the plane flies approximately 1650 meters in 15 seconds.