 
- 帖子
- 118
- 精華
- 0
- 威望
- 69
- 魅力
- 0
- 讚好
- 0
- 性別
- 男
|
6#
發表於 2005-4-5 12:33 AM
| 只看該作者
i believe that can be easily explained by newton first law.
H, s$ Q4 ^9 bWhen no net force act on a object, the object will travel with constant velocity.
9 Q* V+ J5 U. n. o: ^9 [% R
8 m U& `4 W; b4 L2 S0 B
. z- Z* o8 N7 ESince the water on the earth will be attracted by gravitational force, it will fell on the ground.1 s2 G2 q7 U/ Q3 w9 U" Z8 |
' U6 Z% |) z$ A4 Y" P
But in the space, no force is added on the water will u X the ball ,so the water will remain its old velocity(don't move) |
|