 
- 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.
0 Q; w5 e$ e `5 n5 ?When no net force act on a object, the object will travel with constant velocity.3 A, _4 N8 E' j# [4 S
- b3 ]8 `8 n) j. ~5 A& c2 G8 [/ C$ g) }" U; k
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.( t; v6 u( T# O! _+ k( q
. I- W1 z# _& h4 |3 g3 J: M& G
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) |
|