Gravity

You are at earths surface (call this 1 radius (1r) from earth center) with acceleration due to gravity at say 10 (m/s)/s, if you double your distance (in terms of radius this = 2r) and install in equation:

a= 10/(2(r)^2) inverse square law

a= 10/4

a= 2.5 (m/s)/s

2* distance = 1/4 the gravity

3* distance = 1/9 the gravity

4* distance = 1/16 the gravity

13.956 pounds per square inch (psi)

The gravitational pull affects it more or less uniformly. There are very, very slight differences caused by the height of the throw and the width of the ball but, compared to the distance from the centre of the earth, these distances are tiny and so have no effect.

No. Carbon dioxide is thoroughly mixed into the atmosphere and cannot separate from the air simply though gravity. Some carbon dioxide does go into water to become locked away in carbonate minerals, but the primary way of removing carbon dioxide from the atmosphere is through photosynthesis, a process by which plants and algae convert water and carbon dioxide into sugar and oxygen. Currently we are producing more carbon dioxide than the plants can absorb, resulting in an increase in the carbon dioxide in the atmosphere.

You can only see things that either generate electromagnetic waves within

a certain small range of frequencies, or reflect those that are generated by

something else. Gravity doesn't do either of these, much like the sound of a

tenor saxophone, the pull of a magnet, or the aroma of garlic, none of which

you can see either.

hey guys,

im a techer of an university and i can tell you Gravity is non-cntract force.Imagen from a tree falls a apple this is called gravity .the gravity on earth helps us not to fly in the universe or? Yes so now you know it if you have any more questions signe up on www.biologie@science.de

your Cathy ernat

by analysing the direction of the forces acting on it. If the net force is acting in the opposite direction to the motion, it slows down, if it's in the same direction, it speeds up. If the net force is zero, the object continues moving at a constant velocity

Gravity affects objects proportionally to their mass, and electrostatic forces affect objects proportionally to their electrical charge. We can observe that the attraction of the planet Earth for various objects, which we describe as weight, is proportional to mass, not to electrical charge. Consequently we can confidently infer that the attractive force exerted by the planet Earth is gravitational in nature and not electrostatic. It is also true that if there were some enormous electrical charge on the Earth and the moon, causing them to attract each other, we could expect an enormous electrical discharge to take place by which the extra electrons would leave the negatively charged object (moon or planet as the case may be) and travel to the positively charged object.

Yes, it is true. I looked through the computer, and it says that bhaskaracharya was the one. I also looked it up in 5 books from the library. It says on wikipedia a man called Abu Ja'far Muhammad ibn Mūsā ibn Shākir (before 803 - 873) who specialized in astronomy, engineering, geometry and physics, first came up with the idea of what we now call gravity.

Gravity is described in terms of the acceleration of an object falling in it.

The acceleration of gravity on Earth is 9.807 meters per second2.

On the Moon, it's 1.623 meters per second2.

Multiply an object's mass by the local acceleration of gravity, and

you have the object's weight.

That depends on where He/She is standing:

On the moon:

Not much different that earth.

In a space station:

Umm, why is there a boulder in the space station again?

Floating in space:

He/she would fly backwards and the boulder would move away very slowly.

Friction and gravity would keep the person in place on the Earth, moon or space station. However, when they are floating there is no external force. At that point the law of consevation of momentum is in full effect. ( p = m v )

Since the astronaut has a much smaller mass he/she moves more. A similar action-reaction can be seen when firing a standard gun. The bullet has a small mass compared to the person. The bullet moves very fast in one direction while the person only moves a little in the opposite direction.

Complete all the missions

Force of gravity equals mass of planet times mass of other times the constant (G) that makes the units work all divided by the distance from one to the other AND the other to one (turns out to be distance squared). F=GxM1xM2/(DxD)

Gravity is a force, not a rock. (the previous answer was erased for rudeness)

Anything in an orbit is constantly accelerated.

If that sounds peculiar to you, it's because you think 'accelerate' means 'speed up'.

It doesn't. It means 'change speed or direction or both'.

If an object is not moving at a constant speed in a straight line, then it's accelerating.

An object in an orbit is constantly changing direction. So it's constantly being

accelerated, even if its speed never changes.

At the Earth's surface, the acceleration due to gravity is 9.8 m/s2.

The gravitational pull of the earth is pretty much the same anywhere between the poles and the equator creating a centripetal force pulling things in towards the earth.. However, the rotation of the planet results in an outward centrifugal force pushing things away from the earth. This force is greatest at the equator.

Even though the gravitational pull is the same everywhere, the centrifugal force at the equator gives the impression of a very slightly lower gravitational pull.

The most obvious effect of the gravitational pull of the moon and the sun, is the tides visible on beaches.

Pretty much. While Jupiter does not have a solid surface, at what passes for a surface, a 100 lb Earthling would weigh 253 lbs.

there is no gravity in kh2

The center of gravity of a triangle is its centroid. The centroid of a triangle is the intersection of the three medians.

No, it's constant because it depends on the mass, which is constant.

Arrow dynamics