It is known that the higher the speed of movement of the molecules of a body, the higher its temperature.

It is known that the higher the speed of movement of the molecules of a body, the higher its temperature. Why doesn’t the bullet fired in a shooting range from a pneumatic gun heat up, although all its molecules move towards the target at high speed?

According to the equation of the molecular kinetic theory of gases, the average kinetic energy of molecular motion determines the gas temperature by the formula Ek (cf) = 3 * k * T / 2, where k is the Boltzmann constant, T is the absolute temperature.
The faster the molecules move inside the substance, relative to other molecules, the higher the body temperature.
The kinetic energy of the movement of molecules of a substance is a component of its internal energy, which depends on temperature, state of aggregation and other factors, and does not depend on the position of the body in space and its mechanical motion.