mamasing

I agree, I heard that astronaut cannot pee or shit while they are in space.tvb now,tvbnow,bttvb, p7 L4 N4 R$ y! J; B4 `" {. f( J* c
It must be a painful joruney.5.39.217.769 P0 ]( \' e- H: G' K
Oh BTW, if your lecturer talks about "地心引力" in your Physics class.
$ _% B6 B* D% O7 b# Etvb now,tvbnow,bttvbI suggest you pack and pick other subject instead, if you really like Physics, 5.39.217.76) f4 N8 F8 d! w
you need to switch school.5.39.217.76) i5 Q' G9 p4 c, I
There is no 地心引力, but "gravitational" force only.
) J. s% o0 n1 Z: t1 XA simple meaning of Gravitational force = the force of attraction between any
) T$ ~7 _4 U) g, p7 v3 J- s% {two masses.公仔箱論壇: Z  u( k, c- x5 N* S9 c2 E" i
公仔箱論壇0 P' O1 j! l/ Y. B1 e) y
Gosh, I got fooled by my HK Physics teacher many years ago.