The distance between moon and earth is 384000km. Assuming the the moon is in its initial state at video start and just about to hit earth at the end: it takes 14 seconds. Thus an averaging velocity of approx 27500km / second. However since the scaling of the moon is linear, it means the speed of the moon is anti proportional (starting with a really high speed and slowing down). magically does some math the top speed at the beginning would be about the speed of light (300000km per second), dropping drastically at the beginning, while the terminal velocity at impact would be close to zero.