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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.
) V: ~. J8 _' g+ fWhen no net force act on a object, the object will travel with constant velocity./ E+ P" ~; I5 K
* ]* }/ T% |- t, m9 y& ]+ l, k: c( N1 v+ T: V+ P; r& S! K
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.1 p- }4 g9 w- v4 u; |* P- z
5 X( G2 f: h( b. t3 q( 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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