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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.
b% c+ a- k9 O7 |* G L5 rWhen no net force act on a object, the object will travel with constant velocity.
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. l, H( p: D) i8 s4 BSince the water on the earth will be attracted by gravitational force, it will fell on the ground.6 v+ c. s! G- Z4 S5 M3 U2 b* z! N2 b
# O5 j1 G& a7 P! Z( w4 Y; t2 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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