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the rocket speed required to escape out of the earth's gravity is known as escape velocity which is numerically equal to 11.2 km per sec.
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How does astronauts go into space when there is gravity?
The massive speed and acceleration of the spaceship is so great, that they are able to escape Earth's gravitational pull. Then at around the correct altitute, they can orbit the Earth safely.
If an astronaut is weightless orbiting the earth at 100 miles up would you experience weightlessness at the top of a 100 mile step ladder What equations would prove or disprove?
The person on the ladder would not feel weightless because they are not in orbit, they are simply at a high altitude. If they let go, they would fall straight down towards the earth's center just as any other object which is being pulled on by gravity.Orbit is achieved through velocity. With enough thrust, a rocket is able to propel an astronaut to a speed which will send him beyond the earth's gravitational field and straight into space (ie: "escape velocity"). However, by controlling the level of thrust and angle of inclination, the astronaut can be placed in an area of space that is somewhere "in-between" the pull of earth's gravity and the escape velocity. This is called "orbital velocity". The astronaut achieves ORBIT, and he is in a constant free-fall circling around the earth: not quite fast enough to escape the earth's gravity, but not so slow that he falls back to earth.When a spacecraft needs to return to earth, thrusters are fired in the direction of orbit, which decreases forward speed, and allows the craft to return to earth via the earth's gravitational field with help from atmospheric drag.
How did the astronaut keep from floating away on the moon?
There isn't much gravity in empty space, but there is a great deal of gravity near planets, stars, moons and other celestial bodies. The moon has gravity because it has mass. Everything with mass has gravity (including you, albeit a VERY small amount). That's how the astronauts stayed on the moon, and the reason why their movements were slow because the moon has about 1/6 the amount of gravity as Earth.
Why do astronauts float weightlessly in space?
There is (apparent) zero gravity. The absolute gravity in orbit is about 90% of what it is on the surface of the earth, but the effective gravity is zero, and for a good reason.The fact is that in orbit, you are actually falling, but your forward speed is such that the curvature of the planet is dropping at the same rate that you are falling.And the astronauts are falling at the exact same speed as their capsule. This is called freefall.
Escape velocity is the speed required to?
escape the gravitational well and if the planetoid has one, the atmosphere.
What is the speed necessary to escape the earths gravity?
The speed at which a rocket must travel to escape the gravitational pull of the earth is 25,000 miles per hour.
What is the speed maintained by a rocket if it is launced in outer space so it will escape the earth's gravity?
According to most sources, the minimum speed needed to escape the Earth's gravity is 11.2km/s, so a rocket would need to travel at least this fast to get into outer space.
Why you must study escape velocity?
You don't. "Escape velocity" is a meaningless number. "Escape velocity" is the speed at which a CANNON SHELL must be fired in order to escape from the Earth's gravity well. With a powered rocket, you can "escape" from the Earth's gravity at ANY speed - as long as you have enough fuel.
What kind of force is it when rockets escape from gravity?
If the rocket has a certain speed, it will escape from gravity due to its own momentum. To speed the rocket up, currently chemical combustion is used. The burning gas goes out in one direction, thus pushing the rocket in the opposite direction.If the rocket has a certain speed, it will escape from gravity due to its own momentum. To speed the rocket up, currently chemical combustion is used. The burning gas goes out in one direction, thus pushing the rocket in the opposite direction.If the rocket has a certain speed, it will escape from gravity due to its own momentum. To speed the rocket up, currently chemical combustion is used. The burning gas goes out in one direction, thus pushing the rocket in the opposite direction.If the rocket has a certain speed, it will escape from gravity due to its own momentum. To speed the rocket up, currently chemical combustion is used. The burning gas goes out in one direction, thus pushing the rocket in the opposite direction.
In order to escape the gravity of earth a space vehicle near earth must have a speed of about?
about 25,000 mph to completely escape earth's gravity
How is the force of earths gravity overcome when an object is launched into space?
When on Earth, you can escape if you move away from the Earth at the "escape" speed. Gravity will slow you down and you will reach zero speed at an infinite distance.
The speed and direction a rocket must have to break away from a planet's gravitational pull?
The speed is called the escape velocity. An object travelling at the Earth's escape velocity will never return to Earth because as it moves away, and decelerates under the Earth's gravity, the force pulling it back (its weight) is also reducing and if it is above the escape velocity it will escape altogether.
An engine with a speed that can escape earth's gravity?
space probe
Can we go out of the earth's atmosphere slowly without hurting ourselves?
I do not think that it is possible to exit the Earth's atmosphere going slowly. Great speed is required to get past the Earth's gravity so that it does not pull us back inside the atmosphere. In fact, the rocket needs to be at a speed of about 11 km/s to escape Earth's Gravity and reach space.
Does a rocket always need the escape of 11.2 to escape the earth?
That's the initial speed the rocket would need to escape Earth, assuming it starts close to Earth, and no additional impulse is provided later. With a gradual impulse - for example an ion impulse - i.e., providing impulse over time, it isn't necessary to start with this speed. However, the rocket still needs the same total amount of energy to escape from Earth.
What is the speed of rocket during launch time?
Rokets generally launch at about 26,000 miles per hour. This reppresents the amount of kinetic energy necessary to escape the Earth's gravity well.
How do you fly from moon to earth?
Given current technology, whilst orbiting the moon one fires a chemical propellant rocket to begin trans-terrestrial injection. This rocket adds enough speed to escape the moons gravity. If the TTI burn had the proper impulse and was executed at the proper time, the matter of returning to Earth is all about gravity.
