And so if we want to write our vector, our initial velocity vector, and now I'm making explicit its a vector is equal to the sum of these two vectors, so its the magnitude of the x component is v sub i times square root of 2 over 2, actually let me write is this way, is equal to square root of 2 over 2 times v sub i, times the magnitude of our initial velocity, times, and then the direction this is just a magnitude right now, times, and the direction is in the 'i' direction so we can multiply this times the 'i' unit vector,