If you respond with, “African or European?” you’d be corrected by my friends this morning, as I was.
“The line is actually ‘theĀ airspeed velocity’,” they said.

Image from Wikipedia.
But out of curiosity, we decided to look it up. And to our astonishment, everywhere the internet asks about the terminal velocity of a swallow, the internet replies: Don’t you mean airspeed?
No, internet. No we do not. So we figured it out. Because this is what my friends do on a rainy Saturday morning.
Here, for your Monty Python-inspired yet strictly speaking off-script queries as to the terminal velocity of a sparrow, I bring you … The Math.