Question

What are the SI units for kinetic energy?

Answer 1

SI unit stands for the French word Systeme international. It is the international system of units and used as the unit of measurement universally. Kinetic energy is the energy by motion. This energy is possessed by the subatomic particles, like electrons, when subjected to motion in an external force.

Complete answer:
Generally kinetic energy is the term used to denote the work done by any object. In chemistry, kinetic energy can be used to depict the work done by certain molecules under the external force, or work done by electrons, or any other sub – atomic particle in the influence of external magnetic or electrical fields.
Kinetic energy is the energy possessed by any species by the virtue of its motion. It is the one half of the product of mass of the object and the square of its velocity.
The international system of units (SI system) has made Joules as the SI unit for kinetic energy. This energy can be in the form of KiloJoules (kJ), or Joules (J).
Hence, the SI unit for kinetic energy is Joules.

Additional information:
The kinetic energy can be found in the rapid movement of molecules that are able to produce heat due to the motion of molecules. Also electromagnetic radiation, like sunlight, consists of particles having kinetic energy. The formula for kinetic energy is $KE=\dfrac{1}{2}m{{v}^{2}}$.

Note:
The units of kinetic energy are convertible, and the conversion factor of joules into kilojoules is 1 J = 0.001 kilojoules. Which is also written as 1 kilo joules = 1000 joules. Apart from kinetic energy the potential energy of any object is studied which is the energy that the body possesses in the state of rest.