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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.
1 K% @; U7 R, x. k, }2 K+ DWhen no net force act on a object, the object will travel with constant velocity.: m0 {0 |7 g+ `, V6 X5 Q
H& N0 G4 _. Z6 J% E# O2 I
* k+ w7 r/ D& L' t
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.' W" J- {1 f5 Y6 O! c' `. S0 c
& O) h; c7 }0 u8 k9 s& zBut 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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