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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.
% Q# a U, S( F! G, g# QWhen no net force act on a object, the object will travel with constant velocity.
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Since the water on the earth will be attracted by gravitational force, it will fell on the ground.
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^+ I6 j0 p6 C+ Q& {5 n9 FBut 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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