Vector V1 is 7.81 units long and points along the negative x axis. Vector V2 is 4.34 units long and points at +45.0° to the +x axis. (a) What are the x and y components of each vector? V1x = V1y = V2x = V2y = (b) Determine the sum V1 + V2. Magnitude Direction ° (counterclockwise from the +x axis is positive)