Forward-exhaust rocket equation
= Forward-exhaust rocket equation
If a vehicle moving at speed $v$ ejects mass forward at relative speed $u>0$, then
$$
M\,dv=u\,dM.
$$
As $dM<0$, the vehicle slows down.
= Forward-exhaust rocket equation
If a vehicle moving at speed $v$ ejects mass forward at relative speed $u>0$, then
$$
M\,dv=u\,dM.
$$
As $dM<0$, the vehicle slows down.