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6#
發表於 2005-4-5 12:33 AM
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i believe that can be easily explained by newton first law.% ~9 E3 U, M- ~5 `% {
When no net force act on a object, the object will travel with constant velocity.5 V5 k* |" {6 ?
0 w9 D; @" {$ d1 d; B( N2 [# M$ \3 v6 y. V$ W8 ~. E
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.5 P1 e$ L: g( R
2 L, H" G5 {; S6 e2 ?: a% k* r
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) |
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