1. (20%) Consider the truss element shown in figure below. The x-, y-coordinates of the two nodes are indicated in the figure. If q = [1.5, 1.0, 2.1, 4.3]" x 10-2 iii., determine the following: a) the vector q? b) the stress in the element c) the k matrix d) the strain energy in the element. E = 30 10psi A = 2.1 in.? 2 (50.0,40.0) X 1 (10.0, 10.0)