0
Is thrust on the rocket in the absence of gravitational force of attraction constant?
Wiki User
∙ 10y ago
Thrust on the rocket depends only on the engines. It doesn't matter whether
the rocket is sitting on the pad or out somewhere a million miles from nowhere.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Could you survive in a rocket going into a black hole?
No. Even your rocket would be crushed and torn apart by gravitational tides.
Why would a rocket have to travel at a faster speed to escape Jupiter's gravitational pull?
Jupiter's gravitational pull is much stronger than that of Earth.
As a rocket rises its kinetic energy changes. At the time the rocket reaches its highest point most of the kinetic energy of the rocket has been and mdash?
When an object - rocket or otherwise - rises, its kinetic energy gets converted to gravitational potential energy. At its highest point, if it rises directly upwards, all the kinetic energy will be converted to gravitational potential energy. However, its movement may also have a sideways component; in that case, not all the kinetic energy is converted to potential energy.
What happens when a rocket ship accelerating in outer space runs out of fuel?
Unless a projectile is launched at escape velocity, it cannot leave the earth's gravitational pull. For Earth this means the initial velocity must be about 11.2 km/s (ignoring drag and the launch location and direction relative to the planet's rotation). A projectile is something launched from a slingshot, bow, cannon, rifle, arm, etc... An object with its own propulsion, such as a rocket, is not subject to earth's 11.2 km/s escape velocity. A rocket can leave the earth at a much slower "speed" by simply overcoming the force of gravity at the location and moment of its climb. If you had a ladder tall enough (and a ridiculous supply chain) you could very slowly climb away from the earth under your own power. There is no set or calculable speed for a rocket, or any self-propelled object to "escape" the earth's gravity. So, your question, if changed from rocket to unpowered projectile, could be answered as follows: it will fall back toward earth (as satellites do in orbit). Or, if your question is unchanged, the answer is this: it will continue to move up and away from earth at any velocity it has so long as it maintains a thrust sufficient to overcome the diminishing gravitational attraction between it and the earth--eventually escaping our planet. But remember, earth's attraction is not the only gravitational pull out there!
If a rocket in space burns fuel consumes energy at a constant rate its velocity should increase at a constant rate ignoring the loss of mass so why is kinetic energy a function of V SQUARED?
Assuming constant acceleration, at a higher speed, the force must be applied over a larger distance to get the same change in speed. Since work = force x distance, it requires more work to get the same change in speed, once the rocket has a higher speed.In the case of the rocket, the situation is not as simple as you put it. For example, all the fuel the rocket required to change the rocket's speed, say, from 1000 m/s to 1100 m/s, must be accelerated first, using more fuel at first. Also, the exhaust gases from the rocket have kinetic energy, which depend on the rocket's current speed - when it is just starting, the exhaust gases have a higher speed, and therefore more kinetic energy. To see whether energy is conserved or not, this kinetic energy would have to be included in your calculations.
A rocket of initial mass m0 is shot vertically upward Assume that the motion occurs under constant gravitational acceleration g Let the initial velocity of the rocket on the surface of the earth be?
the initial velocity of the rocket is zero.
What is the force that tries to pull the rocket back to earth?
Gravitational Pull.
Is there gravity in a rocket ship?
If the rockets are active then you will feel a gravitational force pulling you down in the direction opposite the rocket's motion. If they are off however you are weightless and you experience no gravitational force.
What stops a rocket from leaving the earth?
The Earth's Gravitational field
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.
Why does a bottle rocket fly?
The aerodynamic structure contributed by the speed, created by the engine allows the rocket to project in a direction, opposite to the gravitational pull. The wing-like structure at the bottom helps the rocket to remain in a parabolic path. Regardless of the weather, a rocket can fly in a steady path. This helps a rocket in flying out of the atmosphere of the earth and gravitational region.
Does the gravitational force change when a rocket gets closer to the moon?
yes
Could you survive in a rocket going into a black hole?
No. Even your rocket would be crushed and torn apart by gravitational tides.
As a rocket travels upwards the engine thrust remains constant but the mass of the rocket decreases Why?
The primary answer is that a rocket under constant acceleration is using up fuel, so it's mass decreases as the fuel is spent.
How is the temperature of a substance related to attraction between molecules and its states?
Gases have the most kinetic energy and the least attraction exists between its molecules. Liquids have the middle amount of kinetic energy and middle attraction. Solids have the least kinetic energy and most attraction exists between its particles. The answer above isn't totally accurate, although it is mostly right. However, the attraction between molecules DOES NOT CHANGE WITH TEMPERATURE. What changes is how much energy the atoms/molecules have to overcome that attraction. The higher the temperature, the more energy the molecules have, and therefore the less the attractive force between will actually pull them together. As an example, consider a space rocket. The force of gravity on the rocket is constant. However, when the rocket is launched, the rocket's engines overcome the attractive force of gravity (by accelerating in the opposite direction) and therefore the rocket takes off. The attractive force doesn't change -- but the rocket's engines are more powerful than that attraction. In the same way, the increased temperature doesn't change the attraction, but it allows the molecules to overcome it. Other example. Image you are rolling down a hill on a bicycle. In the middle of the downhill, there is a rise. Because you have speed from going downhill, this slight uphill section doesn't stop you. However, the slight uphill is still there! It just doesn't stop you because you are already going fast. But it still affects you.
Why would a rocket have to travel at a faster speed to escape Jupiter's gravitational pull?
Jupiter's gravitational pull is much stronger than that of Earth.
How does a rocket propel itself?
Propellants are combined in a combustion chamber where they chemically react to form hot gases. The pressure that is exerted against the combustion chamber wall, results in what is known as thrust, and this is what propels a rocket into the air.
