i'm not sure. but i think you can't say

送交者: Enlighten 于 2008-01-11, 11:04:17:

回答: 2.7km/s = 2.7m/ms = 0.0027km/ms 由 squirrel 于 2008-01-11, 10:56:33:

0.0027. you have to use 2.7x10^-3 instead because 0.0027 somehow suggests a higher level of precision.

be honest, my understanding of this matter is rather superficial. i guess i need to get more educated on this.

ok, i think the problem arises when you use m and ms. - Enlighten (184 bytes) 2008-01-11, 11:07:13 (197303)
- You gave "3.0000000s", not 3s. - squirrel (79 bytes) 2008-01-11, 11:09:48 (197307)