mamasing

I agree, I heard that astronaut cannot pee or shit while they are in space.
& d! N  Y: E* _) v& v& w( lIt must be a painful joruney.
: w' V1 S( ^- j$ g, Z2 NOh BTW, if your lecturer talks about "地心引力" in your Physics class.公仔箱論壇- r) ~/ n% t' K" R1 p  z. Q
I suggest you pack and pick other subject instead, if you really like Physics, TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。3 H$ Q+ a6 @# F# u/ X
you need to switch school./ y7 d; F1 Q* @1 \5 M7 I- c/ t
There is no 地心引力, but "gravitational" force only.5.39.217.76( J6 t, [0 Z. Q7 o. T
A simple meaning of Gravitational force = the force of attraction between any 5.39.217.76  j$ C9 ^) M& R8 w
two masses., Y; W8 x- N& S4 h( t

' {- l- g8 ~$ s3 w. i/ j  \* VTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Gosh, I got fooled by my HK Physics teacher many years ago.