Hiero I think you got it there! I'm pretty sure that's where I would get this additional term out. I will try to solve this and come back to tell you my result.
I think I already did exactly this in my second equation on the right-hand side, that's why it says ##v_g-\dot{z}(t)##.
You're right there. Unfortunately it doesn't make anything better because when taking the derivative of the time this constant disappears. On the other hand, in the term with...
Hey,
I'm tutor for theoretical physics for first year students and I found a question that I couldn't answer so far. It's about the rocket equation. I tried to derive the acceleration without using infinite small variables, but somehow there is one term left that shouldn't be there. In the...