Why does the velocity of gas molecules increase with increase in temperature?

(A): The pressure of a gas depends upon kinetic energy of its molecules. (R) : Kinetic energy of gas molecules increases with increase in pressure.

(A): The resistivity of metals increases with increase in temperature (R): The average time of collision of electrons with the ion of lattice decreases with increase in temperature.

(A): The resistivity of metals increases with increase in temperature. (R): The free electron density in metals in creases with increase in temperature.

(A) : With increase in temperature the condicutivity of metals decreases. (R) : With increase in temperature lattice vibrations increase in metals.

The average velocity of gas molecules in a sample of a gas

Why does physisorption decrease with the increase of temperature ?