# What does it mean to say that the gravity of the Earth is 9.8 m/s2?

It means that any object is attracted by the earth towards its center with a Force

Mathematically speaking, the force of gravity follows the inverse square law, which states that the force of attraction between two bodies is directly proportional to the product of the masses of the two bodies and inversely proportional to the square of the distance between the two.

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The acceleration of gravity (also referred to as the gravitational field strength) at the surface of the earth has an average of

Newton's Second Law states that an object will accelerate when a force acts upon it, and gravity is one such force:

Note that gravity is not a constant; in fact, it decreases with distance from the Earth's center, and it varies from approximately 9.83 at the poles to approximately 9.78 at the equator. For this reason, we use an average value of 9.8, occasionally 9.81.

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It represents the acceleration due to gravity on Earth, commonly denoted as "g." The value 9.8 m/s² indicates the rate at which objects accelerate towards the Earth when falling freely under gravity.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- Can a planet two, three, or even ten times the size of earth have the same gravity?
- How many stars and planets are there in the universe?
- What allows gravity to pull in on things without using energy?
- If the speed of light is 2.9972 x 10^8 m/s what is the maximum possible radius of the observable universe?
- A solid sphere of uniform density has a mass of 4.0×104 kg and a radius of 2.5 m. What is the gravitational force due to the sphere on a particle of mass 1.0 kg located at a distance of 3.00 m from the center of the sphere?

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