### kinetic energy

**(KE)**
(an object's energy due to its motion)

**Kinetic energy** is the energy an object has due to
its motion. For example, an object coasting along a sheet of ice
could be tied via a pulley to a weight and lift the weight,
i.e., the energy of the object's motion used to do some work.
Classical formula:

1
ke = ——— mv²
2

Relativistic:

mc²
ke = ————————————— — mc²
√ 1 - v²/c²

The relativistic formula produces virtually the same amount as the
classical formula unless the speed is very fast, i.e., a good fraction
of the speed of light.
**Thermal energy**, the energy due to a substance's temperature,
is kinetic energy: on a microscopic scale,
it is the energy of the movement of particles.

(*physics,energy*)
**Further reading:**

http://en.wikipedia.org/wiki/Kinetic_energy

**Referenced by pages:**

alpha particle

atmospheric escape

binding energy

Boltzmann constant (k)

Boltzmann equation

carbon (C)

CNO cycle

Compton scattering

core collapse

cosmic rays (CR)

dense core

dynamo

electron capture

endothermic reaction

entropy (S)

escape velocity (V_{e})

electron volt (eV)

fusion

globular cluster (GC)

gravitational collapse

gravitationally bound

gravitational wave (GW)

GZK limit

Hamiltonian

hardness

hydrodynamic escape

ionizing radiation

Jeans length

Jeans parameter (λ)

Kelvin-Helmholtz mechanism

Kelvin-Helmholtz timescale (KH timescale)

Local Interstellar Cloud (LIC)

magnetic dipole braking

mass

Maxwell-Boltzmann distribution

neutron scattering

neutron spectrometer

oxygen burning

particle spectrometer

potential energy (PE)

pulsar (PSR)

magnetic reconnection

reheating

relativistic energy

relativistic momentum

solar energetic particle (SEP)

shock wave

superluminous supernova (SLSN)

solar wind

spin-down luminosity

temperature

tidal Q

VHE

virial parameter

virial theorem

Wigner crystal

Index