What kind of rocket?
A rocket you could make would use mainly compressed air
A NASA rocket, would use a LOT of gasoline to propel it into the air.
Chemical energy (from burning the fuel)
Rocket use chemical force.
they fly at least 17000mph
fly
To but pressure for it can fly high
Marc Halili told us that we need to fly rockets because know about space , we also have to invent something. by mark
chemical energy
Thrust
so you can simply fly in to space:)
Rockets in flight have kinetic energy. Rockets with remaining fuel have chemical energy. Rockets still able to fall back to Earth have potential energy.
Today's rockets use chemical fuel for this. That is, they burn something.
The rockets that have been used carry their one oxygen for the combustion. Or they use a fuel that dosn't need to ignite. These latter propellants rely only on Newtons second law.