Swimming 50 meters in 45 seconds is generally considered a decent pace for a 60-year-old woman, especially if she is not a competitive swimmer. This translates to a speed of about 1.11 meters per second, which is quite manageable for recreational swimming. Individual fitness levels, experience, and health conditions can greatly influence performance, so it's important to consider these factors as well.
402 meters in 4 minutes 47 seconds = 3.13 miles per hour.
1000 meters in 60.6 seconds = 36.91 mph
98.63mph
5.3 seconds for 100 yards.
If an object is travelling 100 meters in 1400 seconds, then it is travelling (100 / 1400) or about 0.0714 meters per second.
402 meters in 4 minutes 47 seconds = 3.13 miles per hour.
1000 meters in 60.6 seconds = 36.91 mph
900 meters/30 seconds = 30 meters/second
6 seconds
0.57 seconds
98.63mph
2.5 seconds
both are just as fast although the one going 10 meters in five seconds is probably accelerating faster...
12.6 seconds, walcott runs in 10.3 seconds
100m in 11.2 seconds :D
0.57 seconds
11.8 seconds