Respuesta :
Answer:
Kinetic energy is the energy associated with the motion of a body. Classically, the kinetic energy is m(v^2)/2. If you are referring to a gas or other multi-body/multi-particle system it is the average of the kinetic energy of all the particles. can be calculated by: K = 3RT/2N.
In this (second) equation, K= average kinetic energy
N = Avogadro’s number (the 6.02 x 10 ^ 23 thing)
R = Universal gas constant
T = Temperature (in kelvin, of course)
Step-by-step explanation:
That depends on how the specific question is framed. Kinetic Energy is the work done is initially accelerating a body of mass to the velocity that is has when the question is asked. But it is necessary to specify the range over which the average is to be calculated. Is it the average of a number of bodies such as molecules, or it over a period of time. You must remember that the average is calculated for the squared velocity and not the square of the average velocity. Also, it must sometimes allow for the rate of acceleration. The energy of a photon is not half the mass times the square of the speed of light, because the acceleration is instantaneous. Also the observer must be motionless or the mass of his body of mass participates in the kinetic energy. Its not always simple to calculate kinetic energy.
