2007-01-13 05:12:22 · 13 answers · asked by h_m_fire_eyes 1 in Science & Mathematics ➔ Physics
Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to.
Mass is the amount of matter and energy in a given object.
2007-01-13 05:17:33 · answer #1 · answered by Tesra 3 · 0⤊ 0⤋
Mass is not as easy to define in a physical quality or quantity as length or time. Generally, the mass of an object is a measure of the amount of matter contained in it. Research shows that the SI mass standard is a platinum-iridium cylinder,also defined as 1 kg.
2007-01-13 05:22:19 · answer #2 · answered by ak8032704 2 · 0⤊ 1⤋
Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. It is a central concept of classical mechanics and related subjects
Your mass always stays the same. Ex: Your weight is only a measurment of how much gravity is pulling you down.. . .your weight is different on Earth then it is on say, the moon. Your mass however would be the same here as it would be on the moon.
2007-01-13 05:15:12 · answer #3 · answered by bundleofjoy2 2 · 1⤊ 1⤋
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(confused with) 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. Einstein developed his general theory of relativity by working on the assumption that this correspondence between inertial and gravitational masses is not accidental: that no experiment will ever detect a difference between them (the weak version of the equivalence principle) because "acceleration" (due to an external force) and "weight" (due to a gravitational field) are themselves identical.
2007-01-13 06:18:08 · answer #4 · answered by THE UNKNOWN 5 · 0⤊ 1⤋
Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. It is a central concept of classical mechanics and related subjects.
2007-01-13 05:15:16 · answer #5 · answered by Put A Smile On! 2 · 1⤊ 1⤋
Mass is defined as the amount of matter contained in an object.
2007-01-13 05:24:37 · answer #6 · answered by openpsychy 6 · 1⤊ 1⤋
The efinition of mass from physical science is"amount of matter"
It is measured on a balance and will determine the weight. W=mg(g=gravity)
2007-01-13 05:20:41 · answer #7 · answered by science teacher 7 · 0⤊ 1⤋
How much stuff you have. Which is not the same as weight, since the same amount of stuff will weigh different amounts on different planets, but your mass stays the same.
2007-01-13 05:15:09 · answer #8 · answered by eri 7 · 1⤊ 1⤋
mass is the amount of resistance something has to acceleration (change in velocity or direction) i.e. how much inertia it has. mas is different from weight in that it is constant throught the universe
2007-01-13 08:09:42 · answer #9 · answered by waiting for the world to change 3 · 1⤊ 1⤋
property of a physical object that quantifies the ammount of matter and energy
2007-01-13 05:15:40 · answer #10 · answered by Seamus K 2 · 0⤊ 1⤋