An artillery shell is launched on a flat, horizontal field at an angle of α = 34.8° with respect to the horizontal and with an initial speed of v₀ = 302 m/s. What is the horizontal velocity of the shell after 22.28 s of flight? (Neglect air friction. Use the coordinate system where the x-axis is horizontal and points to the right, and the y-axis is vertical and points up.) What is the vertical velocity of the shell at this moment?