Not knowing what time you want, here are some important times for the women's 100m butterfly. Please note that "long course" means the race was swum in a 50 meter pool and "short course" means it was swum in a 25 meter pool. Races swum in 25m pools are faster than those in 50m pools due to many factors.
WOMEN'S 100 METER BUTTERFLY RECORDS:
World Records
Long Course: 55.98 seconds by U.S. Swimmer Dana Vollmer at the 2012 London Olympic Games.
Short Course: 55.05 seconds by French/New Caledonian swimmer Dinane Bui Duyet in the semifinals of the 2009 European Short Course Swimming Championships in Istanbul.
Olympic Record
Long Course only: 55.98 by Dana Vollmer at the 2012 London Olympic Games.
2012 London Olympic Results:
Gold: 55.98, Dana Vollmer (USA)
Silver: 56.87, Ying Lu (China)
Bronze: 56.94, Alicia Coutts (Australia)
4th: 57.17, Sarah Sjostrom (Sweden)
5th: 57.27, Ilaria Bianchi (Italy)
6th: 57.35, Jeanette Ottesen Gray (Denmark)
7th: 57.48, Claire Donahue (USA)
8th: 57.76, Ellen Gandy (UK)
It's all about practice and what stroke you are doing. Freestyle, if you practice enough, you should be good. Butterfly or breaststroke, you might not quite make the time.
Dana Vollmer set the world record in the women's 100 meter butterfly at the 2012 Olympic Games in London. Her time was 55.98 seconds.
It would depend what event of 100 meters is being swum, if it is 100m freestyle, then I would say around a 1:00 to 1:10, same thing going for butterfly, and maybe only 5 or 10 seconds more for backstroke. For 100m breaststroke, a good time could be around 1:25 to 1:40, since breaststroke really varies between people, as well as being a slower stroke than other strokes. Lastly, if the event is the 100m IM (Individual Medley), a good time would be somewhere near the swimmer's "prime stroke" time (their best stroke that is not freestyle). This could be anywhere from 1:00 to 1:30, which is pretty fast for a meter race.
butterfly is a stroke where your legs do dolphin stroke or mermaid stroke( keeping your legs together and flapping them up and down) and your arms go up into the air together at the same time and then down again bending your arm slightly when under the water. You also are supposed to keep ducking your face under the water every stroke of the arms you make.
Men: Michael Phelps of the United States in a time of 51.25 seconds. Women: Petria Thomas of Australia in a time of 57.72 seconds.
I do not have specific information on Jason Robinson's 100m time. However, he is a former professional rugby player known for his speed and agility, so he likely had a competitive time in the 100m.
The men's 100 meter world champion for 1980 swimming was in fact in the stroke butterfly. It was won by Tom Daniels from Perth. His speed was fantastic but his stroke wasn't the best. His time was 57.97s. His competitors (MICHAEL PHELPS) had a time of 58.13s.
I cannot remember who it was, but they swam breastroke in an Olympics - whilst raising their arms above the water, as in butterfly. there was not rule against this at the time, but they changed it when this happened, and butterfly became a stroke. It was most likely developed since then, as have many strokes. So yes, if you are a fly swimmer and dislike breastroke - you have to like it for one thing!
the fastest time is 35.67 seconds.
100m freestyle Michael phelps 46.65 seconds
9.69s
no not at all