USW projects

Hey !

I came across this post while learning UE and DM. I was wondering if you had time for two questions:

  1. How did you derive the second equation when there’s friction? Any reference?
  2. Regarding the integral, did you mean something like this? Integrate[Divide[v,v*f+b],v] or Integrate[Divide[v,v*f+b],v] - Wolfram|Alpha

If so, I’m seeing a slightly different solution: v/f - (b log(b + f v))/f^2 + constant. (Not sure what constant is supposed to be).

Thanks and sorry for the noob questions!