* 14. On a road trip, a person drives at an average speed of 29 m/s for 16 km, and then stops for a lunch break for 15 minutes, and finally drives the last 11 km of the trip at a different average speed. If the average speed for the entire trip was 12 m/s, what was the average speed for the last 11 km? S D A 13.8 m/s 29 16 1. 81255 B 31.9m/s 17.0 m/s 2nd 15 D 21.4 m/s E 23.4 m/s 3rd 1 1 29- 16 27 total