1. The problem statement, all variables and given/known data Given the initial velocity of 6m/s[North] and the final velocity of 3m/s[East], how would you find the change in velocity? 2. Relevant equations Change in velocity= final velocity- inital velocity 3. The attempt at a solution I don't know how to do this. I know that if the directions were opposite, like north and south, I could make one direction negative and one positive and then subtract, and the sign infront of my answer would tell me the direction of my answer. But, I don't know what to do when the directions aren't opposites, like north and west or south and east. Is there a method for adding and subtracting vectors of different directions?