The number of molecules colliding with your face increases as the wind speed increases. The rate at which your face loses heat increases, and you cool down faster. The wind-chill accounts for the increased loss of heat by the movement of the air.
The number of molecules colliding with your face increases as the wind speed increases. The rate at which your face loses heat increases, and you cool down faster. The wind-chill accounts for the increased loss of heat by the movement of the air.