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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.
3 G. u* b3 a$ Z' F9 dWhen no net force act on a object, the object will travel with constant velocity./ U) T1 e/ m& G9 K6 G
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; M3 k* D( I+ t f, B& rSince the water on the earth will be attracted by gravitational force, it will fell on the ground.: p1 t3 c$ j4 D9 d
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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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