A bird flies north at 27 m/s for 11 s. It rests for 5 s and then flies south at 31 m/s for 10 s. For the whole trip, find: a) the average speed; 23.35 m/s b) the average velocity; -0.500 m/s c) the average acceleration; 0.1538 m/ 82 Note: You can earn partial credit on this