7. A ship initially has a velocity of 8.0 m/s south and then, over the course of 2.0 minutes, turns completely around so that it has a velocity of 5.0 m/s north. What is the magnitude and direction of ship's average acceleration during this 2.0 minute period when it is turning around? A 0.079 m/s2, South B 0.108 m/s2, North C 0.025 m/s2, South Vf - Vi D 0.108 m/s, South E 0.025 m/s2, North