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weightless
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A friend says that astronauts in orbit are weightless because they're beyond the pull of earth's gravity correct your friend's ignorance?
Astronauts are weightless in space because there is no gravity in space. The lack of gravity is what allows them to float.
Is it possible for an object in freefall to have no acceleration?
No, but it is possible to not have an increase in speed. Because velocity is a directional quantity, not a scalar one, an object in freefall (by definition within a gravity field) is always under acceleration, just not necessarily one that alters its speed or even its position. Objects in orbit around a planet are in freefall (hence weightlessness) where the tangential component of their forward motion opposes the pull of gravity.
How much gravity is in water?
There is not a lot of gravity in space, but there is enought to keep the planets in orbit around the Sun.
What is floating in physics?
Nothing "floats in gravity." Floating in a result of the buoyancy force provided by a fluid. Balloons float because of the buoyancy force from air. Boats float because of the buoyancy force from water. Objects that appear to float in space are usually in orbit, which is actually a state of freefall.
How would you turn in space if there is no gravity?
To start off, there is indeed gravity in space. Objects in orbit only seem weightless because they are already in freefall. Gravity is the main forces that affects objects in space and can be used to change a trajectory. You can also change your speed and direction in space by firing rockets.
Because of free fall astronauts appear this way in orbit?
Weightless
When astronauts float while in orbit because inertia and what are balanced in orbit?
Gravity
Are astronaunts in orbit around earth really weightless?
The astronauts appear to be weightless as they are in a constant freefall, falling at the same speed as the space vehicle they are on. They are 'falling' but due to their angular speed, they are 'falling' around the earth, so don't crash into it. They still have their mass, but you can't really weigh the astronauts as any scales you try to use will read zero as the scales will also be 'falling' at the same rate.
What is the condition for zero gravity?
freefall or stable orbit
What is formed by combining forward motion and freefall?
Orbit
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.
Are astronauts weightless in orbit?
As there is no gravity in space, everything will float........... Because They're in free fall ........
Are astronauts really weightless in orbit?
No.
Where can you go in a zero gravity chamber?
There is no such thing as a zero gravity chamber. The only way to experience weightlessness is in freefall. There are planes that you can board which will go into dives up to 30 seconds long. During these dives the planes are in freefall. Since you are falling at the same rate as the plane is, you will seem to float around the cabin and will feel weightless. It is the same reason that astronauts in orbit are weightless.
Are astronauts really weightless in orbit why not?
because both the astronaut and the satellite is attracted towards the center of the earth
Why is the Hubble telescope at that height?
Because it shall orbit above the atmosphere but still be at an altitude where it can be reached for repairs by astronauts.
Do astronauts in orbit around the earth experience the same gravitational force as they do on ground?
Yes, but they do not "feel" gravity, because they are falling - "free fall" in orbit around the Earth.
