In physics, a physical body (sometimes called simply a body or even an object) is a collection of masses, taken to be one. For example, a baseball can be considered an object but the baseball also consists of many particles (pieces of matter). Physics (from the Greek, (phúsis), nature and (phusiké), knowledge of nature) is the science concerned with the discovery and understanding of the fundamental laws which govern matter, energy, space, and time. ... Unsolved problems in physics: What causes anything to have mass? Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... This article or section does not cite its references or sources. ...

Specifically, a physical body is an object which can be described by the theories of classical mechanics, or quantum mechanics, and experimented upon with physical instruments. This includes the determination of position, and in some cases the orientation in space, as well as means to change these, by exerting forces. In mathematics, theory is used informally to refer to a body of knowledge about mathematics. ... Classical mechanics is a branch of physics which studies the deterministic motion of objects. ... Fig. ... In the scientific method, an experiment (Latin: ex-+-periri, of (or from) trying), is a set of actions and observations, performed in the context of solving a particular problem or question, to support or falsify a hypothesis or research concerning phenomena. ... Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea In physics and engineering, measurement is the activity of comparing physical quantities of real-world objects and events. ... Look up position in Wiktionary, the free dictionary. ... Orientation can refer to different things. ... Space has been an interest for philosophers and scientists for much of human history. ... In physics, force is an influence that may cause a body to accelerate. ...

For instance, the force of gravity will accelerate a body if it is not supported, thus causing a change of its position (that is, it falls freely). However, it should be noted that it is not necessary for there to be forces present for an object position to change - only the rate of change of the object's position, that is, its velocity, will change under the influence of forces. Gravity is a force of attraction that acts between bodies that have mass. ... Acceleration is the time rate of change of velocity, and at any point on a v_t graph, it is given by the gradient of the tangent to that point In physics, acceleration (symbol: a) is defined as the rate of change (or time derivative) of velocity. ...

A human's, animal's or vegetable's physical body is made up of organs and tissues and is a part of the total living being which in the human being may also include a psychological or spiritual component. However, whether or not a human being includes a spiritual component is entirely up to philosophical and theological debate. Trinomial name Homo sapiens sapiens Linnaeus, 1758 Humans, or human beings, are bipedal primates belonging to the mammalian species Homo sapiens (Latin: wise man or knowing man) under the family Hominidae (the great apes). ... Animalia redirects here. ... Vegetables in a market Venn diagram representing the relationship between (botanical) fruits and vegetables. ... In biology, an organ (Latin: organum, instrument, tool) is a group of tissues that perform a specific function or group of functions. ... Biological tissue is a collection of interconnected cells that perform a similar function within an organism. ... In biology and ecology, an organism (in Greek organon = instrument) is a complex adaptive system of organs that influence each other in such a way that they function as a more or less stable whole and have properties of life. ... Human beings are defined variously in biological, spiritual, and cultural terms, or in combinations thereof. ... Psychology (ancient Greek: psyche = soul and logos = word) is the study of mind, thought, and behaviour. ... Spirituality, in a narrow sense, concerns itself with matters of the spirit. ... Human beings are defined variously in biological, spiritual, and cultural terms, or in combinations thereof. ... Spirituality, in a narrow sense, concerns itself with matters of the spirit. ... Philosophy (from the Greek words philos and sophia meaning love of wisdom) is understood in different ways historically and by different philosophers. ... Theology is literally rational discourse concerning God (Greek θεος, theos, God, + λογος, logos, rational discourse). By extension, it also refers to the study of other religious topics. ...

See also

• Rigid body