9. If u has a magnitude of 22 and " has a magnitude of 13, and the angle between them is 71, find the dot product of u and . [2 marks] 10. Find the volume of the parallelepiped defined by the vectors * = [S, -3, 4], # = [-2,9, 1], and w = [0, -1, 7]. [4 marks] 11. A force of [10,13] Newtons acts on an object as it moves along the displacement [8,-1] metres. Find the work done. [3 marks] 12. Given the points A(3, 5) and B(-3, -7) find: a. The vector equation of the line through them. [2 marks] b. The parametric equations of the line through them. [2 marks] c. The symmetric equation of the line. [2 marks] d. The scalar equation of the line. [2 marks] 13. Given the line [x, y, =) = [2,6, -3] + +[4, 10, 5] find: a. The parametric equations of the line. [3 marks] b. The symmetric equation of the line. [3 marks] 14. Find the vector and scalar equations for the plane through A(1, 0, 10), B(5, -5, 3), and C(8, 8, 2). [6 marks] 15. A pilot flies at 300 km/h with a heading of 110. A 30 km/h wind comes from 250. Find the bearing and speed of the plane's resultant travel. [5 marks] 16. Determine the values of & so that u = [3X, k + 10, -13] and = [* - 5, -*, 1] are orthogonal. [3 marks] 17. Given the equations [x, y, = = [7, -15, -4| + s[1, -2, 4] and [x, y. =] = [-15, -26, 23] + +[5, 1, -3], a. Identify whether the equations represent lines or planes. How do you know? [2 marks] b. Solve the system of equations to find the point of intersection. [5 marks] 18. Find the intersection of [z, y, 2) = [1, 4, -2] + +[1, -1, 3] and 2x - 5y + 8z - 28 = 0. [4 marks] 19. Find the distance between the point (10, 100, 1000) and the plane [I, y, =] = [1, 1, 1] + $ 5, -5, 3] + f [-1, 1, 3]. [5 marks]