what's the speed velocity of a swallow
U ≈ 3fA. f ≈ 15 (beats per second) A ≈ 0.22 (meters per beat) U ≈ 3*15*0.22 ≈ 9.9. ... to estimate that the airspeed velocity of an unladen European Swallow is 10 meters per second. Oh, yeah, I agree with thatWith some further study, it became clear that these estimates are accurate, though perhaps coincidental.
From the surface of the Earth, escape velocity (ignoring air friction) is about 7 miles per second, or 25,000 miles per hour. 11.2 km/s Haven't we all wanted to escape the earth at one time or another in our lives?