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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.6 m( k' _( l3 |" ~9 g" O
When no net force act on a object, the object will travel with constant velocity.
( M# c% h6 b: T& K, ^2 c$ h" x @+ y) _: g3 ?- n8 d
) Z" B) ~3 q+ N& GSince the water on the earth will be attracted by gravitational force, it will fell on the ground.
, a/ z! Q9 U+ M# _
. @) w$ _6 ]# m8 W' HBut 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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