not the ones in development now, but in the future if things progress - absolutely yes
Liquid rocket engines would act much like a car engine. More fuel, more thrust. Solid rocket engines are either on or off. No throttle control.
Enough to lift a small rocket 5-600 feet.
The amount of exposed surface area of the fuel
thrust
The amount of thrust depends on the power of the engine
The thrust of a solid rocket engine depends on 3 different values. The first is the rate at which the solid fuel is burned, the second is the composition of the fuel itself, and the third is the way the gas that is coming from the engine is directed by the exhaust nozzles. Therefore as one can see, the exact same material can be burned at very different rates, depending on how much thrust it is producing. So the designer only has to control and slightly change the exhaust nozzles to change the amount of thrust produced by the engine.
The amount of thrust a rocket has depends on its design, type, and size. For example, the Saturn V rocket used in the Apollo missions had a maximum thrust of about 7.5 million pounds-force (33.4 meganewtons). Different rockets can have thrust ranging from a few thousand pounds-force to tens of millions of pounds-force.
The amount of thrust needed to launch a rocket varies depending on the size, weight, and destination of the rocket. On average, rockets require anywhere from hundreds of thousands to millions of pounds of thrust to overcome Earth's gravity and achieve orbital velocity. For example, the Saturn V rocket used during the Apollo missions had a maximum thrust of 7.6 million pounds.
A balloon does not move like a rocket. A helium filled balloon will float upward because the density of helium is less than that of air, so it is effectively "lighter". A rocket is propelled in any direction using a booster engine that burns fuel.
rocket what? an engine?, need to know the year and engine size.
The first stage of the Saturn V had five engines. At launch, each engine produced about 1,500,000 pounds (or 6,670,000 newtons, the SI unit of force) of thrust. The five engines therefore produced about 7,500,000 pounds or about 33.4 million newtons. As the rocket rose through the atmosphere, its thrust actually increased to almost nine million pounds due to the decreasing pressure of the surrounding air. At the same time, it got much lighter as it furiously burned its propellants. This caused the rocket's acceleration to increase to where it could have damaged its structure or the Apollo spacecraft on top. To keep acceleration under 4 "G's", the center or "inboard" engine was shut down about 26 seconds before the other four.
The approximate minimum power required to put a manned rocket into space is around 2 million horsepower. This power is needed to overcome Earth's gravity, propel the rocket to the necessary speed to enter orbit, and provide thrust for the journey.