Gravity

Acceleration due to gravity is greater at the surface of the Earth compared to higher altitudes or in outer space. This is because the force of gravity is stronger closer to the center of mass of an object, such as the Earth.

Gravity is more forceful because it has the ability to pull things down and have everything stay on the Earth. Weak nuclear force is clearly weak and can't really pull things down and keep them there. I hope this helped :)

Generally free fall recreates zero G. Air resistance will change things if you're falling like a parachutist.

What the astronauts experience is exactly free fall, but without a strong wind causing terminal velocity as parachutists.

For about 30 seconds at a time, special aircraft can fly in a manner that simulates free fall (also avoiding the wind (at least on the inside of the aircraft).

When gravity acts on large drops of water, the drops become unstable and tend to break apart into smaller drops. This is because the force of gravity exceeds the surface tension that holds the water droplet together, resulting in the droplet stretching and eventually separating into smaller droplets.

No. But it's designed to do its job by taking advantage of air resistance.

No, a magnetic field is not needed to create gravity. Gravity is a fundamental force of nature that exists between all objects with mass, whereas magnetism is a different fundamental force that arises from the motion of electric charges.

That is called gravitational potential energy. When no confusion is possible, it might just be called "potential energy", although there are other types of potential energy, such as the potential energy in an electrical or magnetic field.

It is responsible for keeping the wheels of the car in contact with the ground,

as well as keeping the driver and passengers in contact with their seats if seat-

belts are not used.

There are not many internal mechanical functions in the propulsion system (the motor)

that are left up to gravity.

-- First of all, I always had the impression that mountains are on land,

at least those that you can stand on. Be that as it may, however . . .

-- Technically, you would weigh slightly less on a mountaintop than you do

when you're on the flats, because on the mountain, you're farther from the

Earth's effective center of mass.

But you'd need some pretty good equipment to measure it. I worked it out once

for a person on an airliner cruising at 35,000 feet ... roughly a mile higher than

the highest mountaintop on Earth.

Compared to his weight at sea level, he weighs about 0.33 percent less when he's

up at 35,000 feet. For a 200-pound man, that's a difference of about 10.6 ounces.

You can use 10 when you only need a rough answer. Use 9.8 when you want your

answer to be more accurate, and if you want it still more accurate, then look up a

more accurate number for the acceleraiton of gravity. (9.8 is a rounded figure.)

Gravity never truly ends; it just becomes weaker as you move further from massive objects like planets and stars. In space, the effects of gravity are felt at vast distances, even between galaxies. The exact point at which gravity becomes negligible is not clearly defined.

Weaker. Mercury is a teeny tiny planet.

Gravity has kept me in my chair today. This has made it immeasurably easier to

do my work.

Gravity has also been instrumental in keeping a plentiful supply of atmosphere

conveniently located in my proximity. I in turn have persisted in breathing,

rhythmically and steadily as far as I know, all of which has undoubtedly had

a salutary influence on my overall performance.

The acceleration due to gravity on or near the Earth's surface is about

9.81 meters per second2 .

The forces of gravity between the Earth and a mass on or near the surface

are 9.81 newtons per kilogram in each direction.

Gravity is a force of attraction between two objects with mass. The larger the mass of an object, the stronger its gravitational pull. Gravity affects objects by pulling them towards each other, causing them to accelerate towards each other. It is responsible for keeping planets in orbit around stars and for the weight we feel on Earth's surface.

Any time you want. You only have to provide a force vector with magnitude
greater than the magnitude of the gravitational force, acting in the direction
opposite to the direction of the gravitational force.

Sound complicated, science-fictional, and probably impossible ?

That's exactly what you do with your leg muscles when you want to move
your body up some stairs.

The total momentum of marbles after a collision is equal to the sum of the momentum of each individual marble. Momentum is a vector quantity, so both the direction and magnitude of each marble's momentum must be considered when calculating the total momentum of the system.

Firstly, gravity is a force.

The strongest gravital effect would be right at the centre of the earth - the centre of its mass.

The greater one's altitude, therefore, the lesser the effect and pull of gravity - being further from the earth's centre.

Tell them it is a pull that the earth and other things in space have that make things fall towards them.

Because it depends on things that can change.

The force of gravity between two masses is proportional to the product of the
masses and inversely proportional to the square of the distance between their
centers. If either of their masses changes, or the distance between their centers
changes, then the gravitational force between them changes. If not, then the
force is constant.

Gravity is typically measured using a tool known as a gravimeter or accelerometer. These devices detect the gravitational pull exerted by an object, such as the Earth, and can provide measurements of gravitational force.

The force with which gravity pulls an object is called its weight. This weight is determined by the mass of the object and the acceleration due to gravity at that location.