i think i answered my own question : trust
no
What kind of Rocket?
dont trust this website
The thrust, which is the force on the rocket due to air. When the fuels are burnt, air (including burnt fuel) is pushed downwards. From Newton's third law, the air exerts an upward force of equal magnitude on the rocket.
Rocket use chemical force.
no
What kind of Rocket?
an elephant will slow a rocket down
the weight of the rocket
For every action, there is an equal and opposite reaction (Newton's third law of motion)..
Thrust, and lots of it. for about $25 bucks @ you're locale hobby store, you can buy a model rocket kit that uses the same basic idea's as nasa's
As a rocket burns fuel, it expels exhaust gases. When the gases are forced out of the rocket, they exert an equal and opposite force on the rocket. A rocket can rise into the air because the gases it expels with a downward force exert an equal but opposite force on the rocket. As long as this upward pushing force, called thrust, is greater than the downward pull of gravity, there is a net force in the upward direction. As a result, the rocket accelerates upwards.-information from Prentice Hall, Science Explorer: Physical Science
As a rocket burns fuel, it expels exhaust gases. When the gases are forced out of the rocket, they exert an equal and opposite force on the rocket. A rocket can rise into the air because the gases it expels with a downward force exert an equal but opposite force on the rocket. As long as this upward pushing force, called thrust, is greater than the downward pull of gravity, there is a net force in the upward direction. As a result, the rocket accelerates upwards.-information from Prentice Hall, Science Explorer: Physical Science
Rockets exert force at the upper part of the combustion chamber. This pushes the rocket forward.
dont trust this website
A rocket in space operates off the expelled mass, from the conservation of momentum, dmv/dt = mdV/dt + Vdm/dt =0, The rocket is acceleration is mdV/dt = -Vdm/dt. The exhaust is Vdm/dt which is the force pushing the rocket forward as the exhaust goes out.
Rocket oil