Temperature and kinetic energy are not actually the same thing. The thermal energy of an object relates to the random, internal motions in the object. The particles will have a range of velocities about a mean velocity (which is the velocity of the Centre of Mass of the object) it's the relative velocities of the particles which tells you that proportion of the kinetic energy corresponding to temperature. The velocity of the CM of the object accounts for the (translational) kinetic energy of the whole thing.seonjunyoo said:
Temperature is directly proportional to the average kinetic energy of the molecules in a substance. As temperature increases, the kinetic energy of the molecules also increases, causing them to move faster.
As temperature increases, the kinetic energy of the molecules increases, which means the molecules move faster. Conversely, at lower temperatures, the kinetic energy decreases and the molecules move more slowly.
Molecules move faster at higher temperatures because they have more kinetic energy. Temperature is a measure of the average kinetic energy of the molecules, so higher temperatures provide more energy for the molecules to move.
Temperature is an indirect measure of the average kinetic energy of molecules. While it doesn't measure kinetic energy directly, it provides a useful way to gauge the average kinetic energy within a system.
At absolute zero (0 Kelvin), the kinetic energy of molecules theoretically becomes zero. This means that molecular motion would cease entirely. However, reaching absolute zero is practically impossible.