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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.% A2 a2 F9 p3 ~) r6 q
When no net force act on a object, the object will travel with constant velocity.5 X! W m( ?2 Y. }0 l
( v- _) {" {! m
+ F/ y0 B) U) A4 A/ M( }2 z% jSince the water on the earth will be attracted by gravitational force, it will fell on the ground.
0 q# D! `$ k! ^4 O1 T5 }, s4 j, i! y$ Q y1 B) E6 v8 D
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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