Thinking/Inquiry (10 marks) Select TWO of the following questions and solve. 12. Two points, A(3, 5) and B(2, 7), are joined by vector 315". Determine the magnitude and direction of E . 13. A small plane is travelling at 175 kmfh on a heading of N8E and is subjected to a 40 mm wind from N80E. Determine the ground velocity of the plane. 14. Solve the following triangle (ifpossible): a = 7 n1, b = 10 n1, AA = 40. 11. Draw a diagram resolving a 30-N force acting in the direction of N 5 013 . Determine the magnitude and direction of its vertical and horizontal components. [5]