A worker is initially 100 m [SW] of a giant boulder. The worker runs 150 m [E 30^o S], then 50 m [S 10o E] and then a third leg to the worker's jackhammer friend who is 200 m [E] of the giant boulder. The trip takes 5 minutes. Finish the vector diagram below including leg 1, leg 2 and leg 3, then find the third leg and the average speed of the worker.