Feedback 4 4 125% + TVO/ILC MCV4U Learning Activity 5.5 Unit 5 Assessment Opportunity 16. A pilot flies on a heading of 320 with an air speed of 240 km/h. Her actual ground velocity is 250 km/h at a bearing of 318. Calculate the speed and direction of the wind. (4 marks) 17. A ship's course is set at a heading of 143 at 18 knots. A 10-knot current flows at a bearing of 112. Use Cartesian vectors to determine the resultant velocity of the ship and its bearing? (4 marks) 18. A traffic light at an intersection is hanging from two wires of equal length making angles of 10 below the horizontal. The traffic light weighs 2500 N. What are tensions in the wires? (2 marks)