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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.
& K! V3 }" }/ E$ J% @* U/ qWhen no net force act on a object, the object will travel with constant velocity.0 R6 g$ m6 Q6 R; ~
: \6 ~5 Q/ \; j; Q! ~* C6 O. U6 L( y) x+ Y
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.
% |! b- W# _( i' O- u6 F3 G, U
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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