12 seconds.
Depends if it's standing or running. Standing it would be bhs. Running it would prob be round off
the answer is relative.. if you are standing on the same train, for you the man will be running as fast as it would do on the ground. If you are standing on the ground, then his speed relative to you will be the composition of the train speed + his speed. to make it more interesting.. think now that the train it's running with a speed that approach the speed of light relative to you.
If you are walking or standing still you are going slower than running, if you speed up then you are accelerating.
Gyeongbu High Speed Railway was created in 2004.
Its not necessarily heavier (thicker is the wrong term), but it is more carefully aligned - and the curves are gentler.
Ankara-Konya high-speed railway was created in 2011.
Istanbul-Ankara high-speed railway was created in 2009.
The average rate of acceleration is (11/5) = 2.2 m/sec2 .
15mph
There are several high speed railway line proposed in US. The most developed are the one in Florida and the one in California.
Green for speed/running.
Humans top running speed has been recorded at 27.89 mph