mamasing

I agree, I heard that astronaut cannot pee or shit while they are in space.5.39.217.77- A' X2 `& ]) s( T8 h
It must be a painful joruney.
# S. s9 I1 n: @- a$ R; wtvb now,tvbnow,bttvbOh BTW, if your lecturer talks about "地心引力" in your Physics class.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。) ~0 X# `* c) i6 C8 c( q* |
I suggest you pack and pick other subject instead, if you really like Physics,
( Q+ }, G- {' t5 d5.39.217.77you need to switch school.
1 J$ _0 I1 q6 y/ A4 ~$ {% }' y公仔箱論壇There is no 地心引力, but "gravitational" force only.5.39.217.772 Y+ X1 r& Z9 T
A simple meaning of Gravitational force = the force of attraction between any 5.39.217.774 \* L! i/ d6 a' C! z
two masses.8 l( ~2 [; M7 K" Z9 i( T

6 Z) W; H% g/ W- C/ S  s+ d  B! H) PGosh, I got fooled by my HK Physics teacher many years ago.