what is the definition of mass?

Answer 1

Mass is simply how much matter there is in something. (Matter is anything you can touch physically.) On Earth, we weigh things to figure out how much mass there is. The more matter there is, the more something will weigh. Often, the amount of mass something has is related to its size, but not always. A balloon blown up bigger than your head will still have less matter inside it than your head (for most people, anyhow) and therefore less mass.

The difference between mass and weight is that weight is determined by how much something is pulled by gravity. If we are comparing two different things to each other on Earth, they are pulled the same by gravity and so the one with more mass weighs more. But in space, where the pull of gravity is very small, something can have almost no weight. It still has matter in it, though, so it still has mass. ALSO REFER TO EINSTEIN'S SPECIAL THEORY OF RELAITIVITY!!

Answer 2

Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. Mass is a central concept of classical mechanics and related subjects, and there are several forms of mass within the framework of relativistic kinematics (see mass in special relativity and mass in General Relativity). In the theory of relativity, the quantity invariant mass, which in concept is close to the classical idea of mass, does not vary between single observers in different reference frames.

In classical mechanics, there are three types of mass or properties called mass:
* Inertial mass is a measure of an object's resistance to changing its state of motion when a force is applied. An object with small inertial mass changes its motion more readily, and an object with large inertial mass does so less readily.
* Passive gravitational mass is a measure of the strength of an object's interaction with the gravitational field. Within the same gravitational field, an object with a smaller passive gravitational mass experiences a smaller force than an object with a larger passive gravitational mass. (This force is called the weight of the object. In informal usage, the word "weight" is often used synonymously with "mass", because the strength of the gravitational field is roughly constant everywhere on the surface of the Earth. In physics, the two terms are distinct: an object will have a larger weight if it is placed in a stronger gravitational field, but its passive gravitational mass remains unchanged.)
* Active gravitational mass is a measure of the strength of the gravitational field due to a particular object. For example, the gravitational field that one experiences on the Moon is weaker than that of the Earth because the Moon has less active gravitational mass.

Although inertial mass, passive gravitational mass and active gravitational mass are conceptually distinct, no experiment has ever unambiguously demonstrated any difference between them. This empirical observation leads to the equivalence principle of general relativity. The weak form of the equivalence principle states that this correspondence between inertial and gravitational masses is not accidental, and that no experiment will ever detect a difference between them.

You could get more information from the link below...

Answer 3

There are two types of mass, gravitational and inertial. Gravitational mass somehow produces - guess what - gravitational fields, but inertial mass is what produces resistance to any change in speed or direction.

The two types are equal to each other (why, no one knows) because of the fact that bodies with different masses always fall at exactly the same rate in a gravitational field. Gravity affects lighter bodies less than heavier ones, but at the same time lighter bodies have less inertia to overcome. This balancing act makes everything fall at the same rate, as Galileo demonstrated (although probably not at the LeaningTower).

Answer 4

Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. Mass is a central concept of classical mechanics and related subjects, and there are several forms of mass within the framework of relativistic kinematics

Answer 5

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Answer 6

noun 1. a body of coherent matter, usually of indefinite shape and often of considerable size: a mass of dough.
2. a collection of incoherent particles, parts, or objects regarded as forming one body: a mass of sand.
3. aggregate; whole (usually prec. by in the): People, in the mass, mean well.
4. a considerable assemblage, number, or quantity: a mass of errors; a mass of troops.
5. bulk, size, expanse, or massiveness: towers of great mass and strength.
6. Fine Arts. a. Painting. an expanse of color or tone that defines form or shape in general outline rather than in detail.
b. a shape or three-dimensional volume that has or gives the illusion of having weight, density, and bulk.

7. the main body, bulk, or greater part of anything: the great mass of American films.
8. Physics. the quantity of matter as determined from its weight or from Newton's second law of motion. Abbreviation:. m Compare weight (def. 2), relativistic mass, rest mass.
9. Pharmacology. a preparation of thick, pasty consistency, from which pills are made.
10. the masses, the ordinary or common people as a whole; the working classes or the lower social classes.
–adjective 11. pertaining to, involving, or affecting a large number of people: mass unemployment; mass migrations; mass murder.
12. participated in or performed by a large number of people, esp. together in a group: mass demonstrations; mass suicide.
13. pertaining to, involving, or characteristic of the mass of the people: the mass mind; a movie designed to appeal to a mass audience.
14. reaching or designed to reach a large number of people: television, newspapers, and other means of mass communication.
15. done on a large scale or in large quantities: mass destruction.
–verb (used without object) 16. to come together in or form a mass or masses: The clouds are massing in the west.
–verb (used with object) 17. to gather into or dispose in a mass or masses; assemble: The houses are massed in blocks.

Answer 7

A Yahoo Search: define mass

should get your answer.

Answer 8

the straight forward answer is

the amount of matter in an object

Answer 9

force divided acceleration or how much of an object you have and the density.

Answer 10

Do your own homework....!