Skip to main content

Cheetah Sets Speed Record

Sarah at the finish - see video.
This is my comment on "cheetah sets speed record". If you Google this phrase, Google shows you a cheetah in a video running the 100 meters in 6.13 seconds.  The cheetah is a 9 year old female, Sarah, who sets off from the back of a vehicle and chases a fake prey item. The picture is a still from the video.

Is this a speed record? What was measured was acceleration and absolute speed. From a standing start over 100 meters you do not measure absolute top speed or average maximum speed. That is evident in the human world 100 and 200 meters world records. Usain Bolt has them both but the 200 meters record (19.19) is less than twice the 100 meters record (9.58), which means that he reached a higher terminal cruising speed in the longer race.

My guess is that the cheetah did not reach terminal velocity (maximum speed) in this video and so called world record. It is not therefore a good test of the speed of a cheetah. A speed test should discover the speed over a fixed distance as is the case for the human world land speed record (car) and it should be a flying start.

I have a page on cheetah speed which tells the story of a true speed test. The cheetah was assessed as running at 64 mph. This is a little less than much quoted 70 mph but people tend to exaggerate.

Sarah did the 100 meters in 6.13 seconds; an average speed, over the distance, of about 37 mph.

Conclusion: the wrong method was employed. The cheetah should have been timed over a 200 or 400 meter course with a flying start. Normally, the cheetah can only run at maximum speed over 400 meters. She is a sprinter. The cheetah gets too hot over longer distances.

Associated page: Usain Bolt versus Cheetah

Comments

Popular posts from this blog

Cat Ear Mites

Brown gunge. Yes, I know this is a ferret! It does show the build up of dark brown to black ear wax caused by the presence of the cat ear mites in the outer ear canal. This parasite is not restricted to the domestic cat, which makes this photo valid and a useful illustration (I was unable to find a suitable photo of a cat with the condition). Photo Stacy Lynn Baum under a creative commons license. Ear mites (minute crab like creatures) are one of the causes of inflammation of the outer ear canal (scientific term for this inflammation is Otitis externa ). The outer ear canal is the tube that runs from outside to the ear drum (the pathway for the reception of sound), which can be seen when looking at the ear. Otitis externa affects humans and often swimmers as it is called "swimmer's ear" in humans. This YouTube video show ear mites under a microscope. They are not actually in the ear in this video. There are many possible causes of Otitis externa in c

Feline Mange

I'll write about three types of feline mange (a) feline scabies or head mange (b) demodectic mange and (c) sarcoptic mange. The source material is from Cat Owner's Home Veterinary Handbook - the best on the market . Generalised feline mange? Puerto Rico - Photo by Gotham City Lost And Found Feline Scabies - head mange Head mange or feline scabies, is a fairly rare condition in cats, which is caused by the Notoedres mite (head mite) that only reproduces on cats. The female mites burrow a few millimeters (that is a lot) into the skin around the head, and neck to lay eggs, which hatch and lay their own eggs. Their presence and activities causes intense itching that in turn causes the cat to scratch. The scratching will obviously be noticed and it will cause the skin to become red, scratched and worse infected. Symptoms: hair loss and scabs, thick wrinkled skin and grey/yellow crusts form plus the symptoms of scratching. Feline mange (head mange) is contagious and tr

Cat Anatomy

Cat Anatomy - Photo by Curious Expeditions . The picture above was taken at Wax Anatomical Models at La Specola in Florence, Italy. The photograph is published under a creative commons license kindly granted by the photographer. I am sorry if it is a bit gruesome. It is pretty well all I could find as an illustration that was licensed for publication. Cat Anatomy is a very wide ranging subject. The anatomy of a cat is very similar to human anatomy. If you were writing a biology book for students of biology you would go through every part of the a cat's anatomy in some detail. It would be similar to writing a book about the human anatomy. It would be a thick book and pretty boring for your average internet surfer. So, how do you limit such a big subject and make this post meaningful? The answer I think lies in doing two things: Having a quick general look at cat anatomy - an overview and; Focusing on the areas of cat anatomy that are particular to the cat and of parti