What is kinetic energy?

  • (noun): The mechanical energy that a body has by virtue of its motion.
    Synonyms: K.E.

Kinetic Energy

The kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body in decelerating from its current speed to a state of rest.

Read more about Kinetic Energy.

Some articles on kinetic energy:

Collision Cascade - Heat Spikes (thermal Spikes)
... If the kinetic energy of the atoms in the region of dense collisions is recalculated into temperature (using the basic equation E = 3/2·N·kBT), one finds that the ... been shown that after about 3 lattice vibrations, the kinetic energy distribution of the atoms in a heat spike has the Maxwell-Boltzmann distribution, making the use ... At lower energies, the cascade energy is too low to produce a liquid-like zone ...
Kinetic Energy in Quantum Mechanics
... (quantum mechanics) In quantum mechanics, observables like kinetic energy are represented as operators ... For one particle of mass m, the kinetic energy operator appears as a term in the Hamiltonian and is defined in terms of the more fundamental momentum ... Given an electron density, the exact N-electron kinetic energy functional is unknown however, for the specific case of a 1-electron system, the kinetic energy can be written ...
Crossed Molecular Beam - History
... gave a good indication of angular distribution but has no sensitivity to kinetic energy ... In order to gain insight into the kinetic energy distribution, early crossed molecular beam apparatuses used a pair of slotted disks placed between the collision ... well as time-of-flight mass spectrometers to allow easy measurement of kinetic energy ...
Planck Constant - Origins - Photoelectric Effect
... The energy transferred by a wave in a given time is called its intensity ... intense than the light from a domestic lightbulb that is to say that the spotlight gives out more energy per unit time (and hence consumes more electricity) than the ordinary ... However the energy account of the photoelectric effect didn't seem to agree with the wave description of light ...
Mass-analyzed Ion-kinetic-energy Spectrometry
... Mass-analyzed ion-kinetic-energy spectrometry (MIKES) is a mass spectrometry technique by which mass spectra are obtained from a sector instrument that ... The ratio of the kinetic energy to charge of the product ions are analyzed by scanning the electric sector field E ... The width of the product ion spectrum peaks is related to the kinetic energy release distribution for the dissociation process ...

Famous quotes containing the words energy and/or kinetic:

    The very presence of guilt, let alone its tenacity, implies imbalance: Something, we suspect, is getting more of our energy than warrants, at the expense of something else, we suspect, that deserves more of our energy than we’re giving.
    Melinda M. Marshall (20th century)

    The poem has a social effect of some kind whether or not the poet wills it to have. It has kinetic force, it sets in motion ... [ellipsis in source] elements in the reader that would otherwise be stagnant.
    Denise Levertov (b. 1923)