“kinetic energy”的概念、定义、翻译、参考文献-科学参考

kinetic energy

Physics

See energy.

Mathematics

The energy of a body attributable to its motion. The kinetic energy is often denoted T. For a particle of mass m with speed v, $T = \frac{1}{2} m v^{2}$ . For a rigid body rotating about a fixed axis with angular speed ω‎, and with moment of inertia I about the fixed axis, $T = \frac{1}{2} I ω^{2}$ . For a rigid body in general motion, the kinetic energy is given by

$T = \frac{1}{2} m {| v_{G} |}^{2} + \frac{1}{2} ω^{T} I_{G} ω$

where m is the mass of the body, v_G is the velocity of the centre of mass G, ω‎ is the angular velocity, and I_G is the inertia matrix at G.

Kinetic energy has the dimensions ML² T⁻², and the SI unit of measurement is the joule.

Astronomy

The energy possessed by a body by virtue of its motion in space. It is equivalent to the work that would be done if the moving body were brought to rest. When the speed of a body is much less than the speed of light, kinetic energy is equal to ½ mv², where m is the mass of the body and v is its velocity. A rotating body has kinetic energy ½ I ω‎², where I is its moment of inertia and ω‎ is its angular velocity.

Chemistry

See energy.

Chemical Engineering

The energy of a body by virtue of its motion:
$K E = \frac{1}{2} m v^{2}$

where m is the mass of the body and v is its velocity. The SI units are kg m² s⁻² or joules.

Geography

The energy of motion; in geomorphology, the energy used by wind, water, waves, and ice. Kinetic energy for channelled flow is defined as:
$\frac{{MV}^{2}}{2}$
where M is the mass of water, and V is the mean velocity.

单词	kinetic energy
释义	kinetic energy Physics See energy. Mathematics The energy of a body attributable to its motion. The kinetic energy is often denoted T. For a particle of mass m with speed v, $T = \frac{1}{2} m v^{2}$ . For a rigid body rotating about a fixed axis with angular speed ω‎, and with moment of inertia I about the fixed axis, $T = \frac{1}{2} I ω^{2}$ . For a rigid body in general motion, the kinetic energy is given by $T = \frac{1}{2} m {\| v_{G} \|}^{2} + \frac{1}{2} ω^{T} I_{G} ω$ where m is the mass of the body, v_G is the velocity of the centre of mass G, ω‎ is the angular velocity, and I_G is the inertia matrix at G. Kinetic energy has the dimensions ML² T⁻², and the SI unit of measurement is the joule. Astronomy The energy possessed by a body by virtue of its motion in space. It is equivalent to the work that would be done if the moving body were brought to rest. When the speed of a body is much less than the speed of light, kinetic energy is equal to ½ mv², where m is the mass of the body and v is its velocity. A rotating body has kinetic energy ½ I ω‎², where I is its moment of inertia and ω‎ is its angular velocity. Chemistry See energy. Chemical Engineering The energy of a body by virtue of its motion: $K E = \frac{1}{2} m v^{2}$ where m is the mass of the body and v is its velocity. The SI units are kg m² s⁻² or joules. Geography The energy of motion; in geomorphology, the energy used by wind, water, waves, and ice. Kinetic energy for channelled flow is defined as: $\frac{{MV}^{2}}{2}$ where M is the mass of water, and V is the mean velocity.
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