0
How can a rocket accelerate if there is no air or ground to push off?
Wiki User
∙ 9y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How does a rocket turn in if there is no air resistance in space . What does it push against. What resists the thrust?
There is no need for air resistance, nor does the thrust need to push against anything. The energy of firing a rocket pushes the exhaust gasses out and, in accordance with Newton's Third Law, the gasses push back on the rocket with the same amount of force, but in the opposite direction. By firing gas jets or rockets that are not aligned with the center of mass, that force exerts torque, which allows a rocket to turn.
What force from expansion of gases pushes rockets forward?
Thermal expansion of the combusting gases in the rocket nozzles (bottom of the rocket) pushes them against the outside air, and the equal-and-opposite reaction is to push the rocket upward.
What rocket flies faster a rubberband rocket or a air rocket?
Compressed air rocket.
Why is rocket plane more efficient in the absence of air?
A rocket plane does not have to fight against air resistance if there is no air.
Which forces slow things down out of upthrust friction weight and air resistance?
Air resistance and friction. Weight can sometimes slow you down if your going up in like a plane or rocket. UpTHRUST THRUST=Push
Why rocket is used?
A rocket is used for space travel because it requires nothing to push against,no air or ground is needed. The speed and quantity of gas leaving the engine has an equal and opposite force on the rocket propelling it in the opposite direction.
Why is a rocket eawier to accelerate as it travels through space?
much less air resistance.
What propells a rocket?
The fuel being ignited by a spark is what propels a rocket to blast off. The mass and the speed are factors as well.
How does atmosphere affect a rocket?
the atmosphere will slow a rocket due to air resistance dispite the popular notion that the rocket would work better for having somthing to push against.
How does a rocket turn in if there is no air resistance in space . What does it push against. What resists the thrust?
There is no need for air resistance, nor does the thrust need to push against anything. The energy of firing a rocket pushes the exhaust gasses out and, in accordance with Newton's Third Law, the gasses push back on the rocket with the same amount of force, but in the opposite direction. By firing gas jets or rockets that are not aligned with the center of mass, that force exerts torque, which allows a rocket to turn.
In Robert Goddard's time what did people mistakenly believe was necessary for a rocket to work?
They believed that a rocket needed air to push against. Robert Goddard tested a rocket in a vacuum and proved them wrong.
What force from expansion of gases pushes rockets forward?
Thermal expansion of the combusting gases in the rocket nozzles (bottom of the rocket) pushes them against the outside air, and the equal-and-opposite reaction is to push the rocket upward.
How many newtons of force does a rocket need to take off?
This depends on the weight of the rocket, weight being the mass of the rocket multiplied by earth's gravitational pull. To take off, the rocket needs to exert force larger than the weight, and for a sufficient amount of time to break out of orbit. For instance, if the rocket had a mass of 1kg, it'd exert (1 * 9.8), or 9.8 Newtons of force towards to ground via it's weight (9.8 being the acceleration towards the ground due to gravity). This means that to start to accelerate away from the ground, the rocket would need to exert force higher than 9.8 Newtons. If your hypothetical rocket has a mass of x kg, then it will need to exert a force greater than 9.8x newtons, ignoring air resistance and decaying of the gravitational field.
What rocket flies faster a rubberband rocket or a air rocket?
Compressed air rocket.
When i step on the air pump the rocket fly but suddenly the kinetic energy drop when it reach the ground?
Correct
A rocket achieves lift off due to what?
Burning rocket fuel exerts pressure on the rocket nozzle. Note that this happens regardless of whether there is any air for the exhaust to push against. It is simply a matter of expanding gasses which exert pressure.
How do you do German jumps?
you get down like you are going to do a push up but instae of pushing your body up you completely push yourself of the ground into the air
