1. A car undergoes non-constant acceleration from an initial speed of 4.00 m/s in the reverse direction to a final speed of 8.00 m/s in the forward direction. If this trip lasts 24.0 s and if the car moves 30.0 m in the reverse direction during this trip, a. what are the magnitude and the direction of the car's average velocity, and b. what are the magnitude and the direction of the car's average acceleration? 2. Vector A has a length of 4.00 and it makes an angle of +30.0 with respect to the +x direction. Vector B has a length of 8.00 and it makes an angle of -60.0 with respect to the +x direction. What are the x- and y- components, Cx and Cy, of the vector sum, C = A + B