1. The problem statement, all variables and given/known data A ball rolls with a velocity of 14 mm/s [W] on a board that is being pulled [E 60o N] at 20.0 mm/s. What is the velocity of the ball relative to the floor? b = ball x = board f = floor 2. Relevant equations V_bf = V_bx + V_xf 3. The attempt at a solution I tried to work through this question by drawing it on a Cartesian grid and by drawing out the vectors. I used trigonometry on the triangle to figure out the component of V_xf horizontally, and then plugging V_xf into the V_bf = V_bx + V_xf equation. The answer I got was 4 mm/s W, but is was incorrect. I am not sure where I went wrong.