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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.
( l1 {( v& X3 J- w: kWhen no net force act on a object, the object will travel with constant velocity.8 K( _/ O) {. ^7 c$ H1 T
' l$ V9 W4 e' A3 F2 h6 U) X6 \. M' H4 `7 C" f3 G T
Since the water on the earth will be attracted by gravitational force, it will fell on the ground.: L7 F2 I8 u2 R, R
& L3 }$ a9 E" h: V* p1 S
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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