Answer:
The kinetic energy of particles in a system.
Explanation:
Thermal energy in heat and have kinetic energy!
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Unlike solid matter, where particles are tightly packed and slightly vibrating, or gas, where particles go around everywhere and are extremely loose, a liquid has particles that are loosely packed but are still in slight contact with each other. Hope that's good enough
Answer:
The relative velocity is the velocity of an object or observer B in the rest frame of another object or observer A.