vertical rocket start:
F_thrust (simple F)
Δm (fuel consumed per Δt)
the relative velocity of the gas w is demanded.
The Attempt at a Solution
or second direct way:
so the first one should lead to the direct solution if I'm not mistaken, but I struggle to get the correct solution.
To be more specific, it seems in order to get the same result Δv=(a+g)Δt but this wouldn't make much sense for me.
thanks in advance