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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 V9 z. R+ E0 G) u) Y: N; s( K! b GWhen no net force act on a object, the object will travel with constant velocity.7 W. p- N9 {, J/ i; x: Y
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Since the water on the earth will be attracted by gravitational force, it will fell on the ground.' b& {$ p- v" w( Y# H
+ Q0 k$ Q" j+ y% ]+ l% f9 ]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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