1. The problem statement, all variables and given/known data A watercraft with an initial velocity of 6.4 m/s [E] undergoes an average acceleration of 2.0 m/s2 for 2.5 s. What is the final velocity of the watercraft? 2. Relevant equations vf = vi + a * t a = v / t v = v2 + (-v1) pythagoras and cosine law? 3. The attempt at a solution I think I need to separate the velocities into x and y components and calculate the final velocity in both the x and y components to find the final velocity, but I don't know if that's correct. To be honest I don't really know where how to start the question.