a fast time is around 35sec or less but that is at state/national level normally 45 and under ur doing great but 35sec and under is bloody brill
someone has done it 31 secs
A light year is a measure of distance, not time.1 light year = 9.4605284 Ã— 1015 meters
As fast as they can!
A light year is not a measure of time but a measure of how fast light can move. Which is 299,792,458 meters per second.
A time of 15.1 seconds in the 100 meters for a 12 year old is a good time. It is not considered especially fast, but it is likely as fast or faster than average.
that's freaky fast
Yes, it is very fast because the average for a thirteen year-old in 40 meters is about 7 seconds
I apologize for the last answer. A fifteen year old boy doesn't necessarily need to swim 1500 meters in any amount of time. It really depends on who you are. If you normally swim, then you might be able to do this in a twenty minute time period.
5 meters per year
faster than me
probably about 15-20 seconds.
Well back when I was 13 a ran a laser timed 6.8 years. But you might not be that fast; cause 6.8 years is pretty fast for a 13 year old!
How fast it runs depends on its width and depth and time of year.
"Meters per second" is a proper and wonderful unit for speed, but there's no answer to that question, because a 'light-year' is not a speed. It's a distance, defined as the distance that light travels through vacuum in one year. Speed of light in vacuum . . . 299,792,458 meters per second Length of 1 light-year . . . . . 9.4605284 Ã— 1015 meters
A fast time is probably 16 or 17 seconds!:)
In a year, light will travel 9.5 x 1012 km, or 9.5 x 1015 meters.
About 16 seconds for a slim semi-fast girl