the initial mass is the rocket mass plus the engine mass, the propellant mass is included in the engine mass. the propellant mass is used to find the mass of the coasting rocket. thanks though. if you have any other ideas please help
Homework Statement
I need to find out the rockets max velocity and max altitude. My teacher gave us an example but everytime i use the stuff we know his answer doesn't match mine.
So we know: Rockets mass=23 grams
mass of engine=16.2 grams
mass of propellant=3.12
average thrust=8 Newtons
burn...