 
- 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.4 V1 Y% b1 L. r% T3 O, t
When no net force act on a object, the object will travel with constant velocity.; q1 X/ D( e! \ m# s9 r8 h
# X- U3 f x* j6 e' O$ z1 W" W$ s* j6 `$ k# U3 \5 n
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.0 V. r! v! X7 T1 D e+ N# {+ L# o! g
`8 B% C e! v1 O- }( j
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) |
|