SHORT ANSWER SECTION [Marks are indicated beside the question. Full algebraic solutions are required.) 1. Two points X(1,2,6) and Y(5,5,12) are given. a) Find the position vector FY. 0 b] Determine the unit vector in the direction of E. 9 2. Ellen is ying a plane and the plane has a ground speed of 580 km/h N40E. A wind of 65 km/h is blowing from 170. Find the air velocity and direction the pilot must head to achieve the ground velocity. Include your diagram. 0 3. Daniella wants to cross a river that is 200 m wide whose current ows at 2.5 m/s. The marina is located S45W from his starting position. Daniella can paddle her canoe at 4 m /s in still water. a] Draw the diagram in the river provided including values. 0 b) In which direction should she head to get to the marina. 9 c) How long will the trip take? 9 start Law Marina-1