A nano-second is a fraction of 1 x 10-9 a second.
If you mean milliseconds, there are 1000 in a second
One thousandths of a second.
981cm/second/second
300 per second
second
It is about 186,000 miles per second
the time in a second is 60 seconds, or 120 nano seconds
Ten dollars per second !!
i second
30
0.001.
23p