1. The problem statement, all variables and given/known data I uploaded the picture to this problem, but it asks what the relative velocity of point p is to point o when theta is equal to one and the derivative of theta in respect to time is also positive 1. the picture explains everything. 2. Relevant equations Tangential velocity is equal to omega (angular velocity) times the radius. the radius would be the 200 mm arm in this case. 3. The attempt at a solution Honestly, my solution seems too simple, but the logic seems right to me. I basically just used the equation Vt=ω*r the Vt=200*1=200 then just used the cosΘ=Vxt/Vt and solved for Vxt with Θ=1 rad and Vt = 200 the answer I got was 108.0598mm/s I went off the idea that the Vtx value would always have to be equal to the velocity of P I may have gone horribly wrong somewhere but I'm not really sure if I have. Thanks for the help, you guys and girls rock!!