Gravity

The gravitational force between two bowling balls would be greater than the gravitational force between two feathers. This is because the force of gravity is directly proportional to the mass of the objects interacting. Since bowling balls have a much greater mass than feathers, they would exert a stronger gravitational force on each other.

Acceleration due to gravity is always directed towards the center of the Earth, which is typically considered downward. However, in certain situations such as on a curved surface or in space, the direction of gravity's acceleration may vary.

-- The force of gravity near the surface of the Earth is close to 9.8 newtons (2.205 pounds)

per kilogram of mass.

-- "Free fall" means no other forces acting on the object besides gravity. If that's true,

then the object's acceleration is 9.8 meters per second2 downward.

-- In reality, it's very difficult to achieve real free fall because of air resistance.

The effect of air resistance is a force on the object that depends on its speed,

shape and size, and acts in the direction opposite to the object's motion.

Considering an object in fall, the force of air resistance acts opposite to the force of

gravity. So the combined magnitude of both forces is less than the force of gravity

alone. That means the object's acceleration is something less than the acceleration

of gravity. When it reaches the speed where the force of gravity and the force of air

resistance are equal, the combined magnitude of both forces is zero, the object stops

accelerating, and falls from there at a constant speed, called "terminal velocity".

Both magnetic force and gravity act at a distance without direct contact between objects. They both follow an inverse square law, where the force decreases with distance squared. Additionally, they are both fundamental forces of nature that govern the motion of objects in the universe.

The factors that affect the way gravity acts on objects include the mass of the objects and the distance between them. The larger the mass of an object, the stronger its gravitational pull. Similarly, the closer two objects are to each other, the stronger the gravitational attraction between them.

Gravity is the cause of forces that attract every pair of masses toward each other.

If one of the masses is the Earth and the other one is you, then you call the force

your "weight".

When you're on or near the surface of the Earth, and

you've decided to call the upward direction positive.

Because the paper has to push more air out of its way while it's falling.

If you could drop them in some kind of a tube or tank with no air in it, then the stone,

the paper, a bowling ball, a drop of water, and a feather would all fall together.

Acceleration due to gravity is negative when an object is moving up. Accl'n due to gravity is positive when an object is moving down (since gravity acts downwards on an object).

^Acceleration due to gravity is always negative, while the acceleration of the ball upward was positive due to what threw it, not gravity.

All bodies with mass are attracted to the Earth by gravity, so when a body is raised you must do work to raise it. This work is equal to force x height, if force is in Newtons and height in meters, the work is in units of Joules.

Arriving in the English language around 1500 CE, the word derives from the Middle French word gravite, meaning seriousness, or thoughtfulness. It also derives from the Latin word gravitatem.The scientific sense of the word, meaning force that gives weight to objects, was first recorded in the 1640s.

The "buoyant" force is acting on it, in the vertically upward direction. That force is

equal to the weight of the water that would be in the volume of the rock if the rock

weren't there.

If you want me to pick the correct answer from a list of multiple choices for you,

the least you could do would be to let me see the list.

In this case, I can make a pretty good guess, because there are only two things

that can have any influence on the gravitational force between two objects . . .

the masses of the objects, and the distance between them.

Specific gravity of quartz > 2.65; variable 2.59-2.63 in impure varieties.

The rap on Royal Tailor's song "Gravity (Pulling Heaven Down)" is performed by rapper Capital Kings. They collaborated on the song with Royal Tailor, bringing their unique hip-hop style to the track.

The uphill journey is a pull; the motors must pull the weight uphill.

The downhill journey while of course being influenced by the pull of gravity is simply not enough by itself to power the entire thing.

There is no pushing involved.

Airplanes do not "defy gravity", any more than you do when you walk upstairs.

In both cases, an upward force is generated that is greater than the downward force

of gravity on an object. Since the net force on the object is then upward, the object

accelerates upward.

Yes, an equal arm balance is commonly used to measure mass by comparing the mass of an object to a set of known masses on the other side of the balance. When the two sides are equal, the mass of the object can be determined.

No. Mass is a property of the object and doesn't change, no matter where the object goes or what's happening to it. The force of gravity on the object is its "weight" and that can change. It depends on, for example, what planet the object is on.

When the air resistance on a falling object equals the pull of gravity, the object reaches its terminal velocity. At terminal velocity, the object no longer accelerates and falls at a constant speed due to the balance of forces acting upon it.

Gravity is most often described in units of acceleration, which is exactly the same thing

as force per unit mass.

On the surface of the Earth, that's 9.81 meters/second2 and 9.81 newtons/kilogram .

(Except in the US, where it's 32.2 feet/second2 and 32.2 pounds/slug .)

Also, while we're on the subject, gravity doesn't change in air, but acceleration does

because there are other forces besides gravity acting on an object falling in air.

No, temperature does not affect the force of gravity. Gravity is a fundamental force of nature that is determined by the mass and distance between objects, not by temperature. Temperature may affect the properties of objects or materials, but it does not influence the strength of gravity.

No, an object with mass will always experience the gravitational force, so it cannot be truly weightless when under the influence of gravity. Weight is the measure of the force of gravity acting on an object, so as long as gravity is present, the object will have weight.