How does the kinetic energy of molecules change if the body heats up?

How does the kinetic energy of molecules change if the body heats up? Why? How will the internal energy of the whole body change in this case?

The kinetic energy of molecules increases when heated. It grows because the speed of movement of molecules increases. The body temperature depends on the speed of the molecules. At the same time, the internal energy of the body also increases due to the fact that it heats up.



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