What is the Airspeed Velocity of an Unladen Swallow?
410311
African or European swallow?
332219
An egg is pretty aerodynamic, so we can neglect friction. Thus, a falling object satisfies the equation\n\ns(t) = -0.5*g*t^2+v0*t+s0\n\nwhere g is 9.82 m/s^2, v0 is the start velocity (in this case, 0) and s0 is the start height (in this case, 3 metres).\n\nSo, letting s(t)=0 and solving for t, we get\n\n0 = -0.5*g*t^2 + 3\n\nt = sqrt(6/g) = 0.78 seconds.
5080
African or European?  And aren't you curious about the velocity?
998671
Gravity slows down the ball at 9.8m/s/s. After 1s, its velocity is 12-9.8=2.2m/s
485424
What do you mean?  An African or European swallow?
233538
An African or European swallow?
530763
There are 47 species of swallow native to Africa.  Of those, only two are actually named for the continent:  the West African Swallow (Hirundo domicella) and the South African Swallow (Hirundo spilodera).\n\nThe South African Swallow's range only extends as far north as Zaire, and thus it is probably the non-migratory bird often mentioned in these comparisons.\n\nThe European Swallow (Hirundo rustica) must beat its wings 18 times per second to remain airborne (not 43 as is popularly believed).  Comparing this with the average amplitude of their wing beat we come out to an average airspeed of about 11 meters per second (approximately 24 miles an hour).\n\nThis is cruising speed, mind you.  It's possible that the birds could as much as double that for top speed.\n\nThe South African Swallow is slightly more massive than the European Swallow, however it's wing is also correspondigly larger.  Although biometric data on the species is hard to come across, and not easily electronically accessible, it is reasonable to assume that this species has much the same unladen air velocity as the European species.  That is, about 11 meters per second.
1217
The speed of sound in air depends on a number of factors - air temperature and pressure.  Generally the higher the altitude the lower the speed of sound.\n\nIn air, sound waves travel at around 330 metres/second (when the air temperature is 0 degrees centigrade). At 40 degrees centigrade (a very very hot day) the velocity increases to 354 metres/second in air.\n\nThe average figure for speed of sound at standard temperature and pressure is quoted as 343 metres per second or 767 miles per hour.
750537
acceleration = v^2/r or v*v/r (this is m/s^2 so divide by 9.81 to get g's)\n\nwhere v is the velocity\n\nr is the radius\n\nBe careful, think about the one g the pilot feels from the pull of the earth. ;)
1102776
Horse - 47.50 mph\nZebra - 40.00 mph
481337
i beleive according to the man in the castle a swallow had to beat it's wings 43 times every second in order to maintain air speed velocity. That's a european swallow by the way :
214186
Maximum speed: Mach 2.05 at altitude, 1,321 mph (2,100 km/h)
836862
distancetravelled by the bird=2000m\ntime taken=187 1/2 sec\n                 =375/2 sec\nspeed is in the ratio of 1:2\ndividing the time in the ratio of 1:2\ntime to=375/2(2/3)=125 sec\nspeed=distane/time=1000/125=8 m/sec\nspeed in thefro direction=16m/sec\ncheck\n1000/8+1000/16=3000/16\n=187.5 sec checks
395745
The insects with the highest reliably measured airspeeds are desert locusts (Schistocerca gregaria) and corn earworm moths (Helicoverpa zea). These fly at average airspeeds of 33 and 28 km/h respectively (about 21 and 17 mph). \n\nAustralian tiger beetles, genus Cicindela, subgenus Rivacindela, (Coleoptera: Cicindelidae) are the fastest running insects known. The fastest, Cicindela hudsoni, can run 2.5 meters per second (5.6 miles per hour).
968386
actually that was..\n\n"What is the air speed velocity of an unladen swallow?"\n\n"African or European?"\n\n"I don't know that....ahhhhhhhhh!"\n\n"Well you have to know these things when you're king."
368139
If the object has onboard power, then the speed is not really relevant to whether it will leave the atmosphere, just when. If you just fire an object upwards and it has no self-propulsion, however, then you need to calculate the change in gravitational potential energy (find out how far the atmosphere extends) and add the energy lost to air friction (this depends on velocity). Equate this to the object's initial kinetic energy and solve for initial velocity v. Your initial velocity will have to be larger than this.
97099
Please take a look at:\n\nhttp://en.wikipedia.org/wiki/Orbital_velocity