4 - Bruh da the goose swims at 4.0 mys [N], across : 10 m wide stream with a current of 310 m/S E . A) Determine her velocity with respect to the ground. B) Determine the angle Bruhilda should use if she wishes to land directly across from her starting point. 5 - D'Artagnan the duck flies with an airspeed and heading of 20 m/'s [NE] on a breezy day with 5 m/s [: 30: N] tail winds. The duck wishes to arrive at Lake Canard which is 2 km [NE]. A) Determine its resultant velocity with respect to the ground, naively expected ETA and position relative to the lake at that time. B) Then determine which heading D'Artagnan should take if it does not want to be blown off course and would like to travel [NE] with the same airspeed of 20 m/s and how early or late the duck will be. 6 - Gertrude flies the Swan Lake Jumbo Jet with an airspeed of 900 kim/h with a heading of [: 15: N]. A warm winter hurricane blows at 200 km/h [: 30: S]. A) Determine its resultant ground speed and tracking B] Then determine the new heading and airspeed needed by Gertrude to avoid being blown off course and to arrive on time