1. The problem statement, all variables and given/known data Suppose you are standing uptight with your right arm stretched out straight in front of you, palm down, the upper arm rotating rightward relative to space at 2 radians/s and the elbow flexing in the horizontal plane at 2 radians/s. What is the rotational velocity of the forearm in space? 2. Relevant equations 3. The attempt at a solution I am not sure if I understood the description of the movement correctly, because now I have the impression that there are informations missing I would need to solve this, e.g, on which point on the forearm the rotational velocity is measured, because I thuoght that would depent on the point on the forearm.