I agree, I heard that astronaut cannot pee or shit while they are in space.tvb now,tvbnow,bttvb" E9 T: z4 u% ?! E
It must be a painful joruney.
1 t; K' y% m, O& u) e公仔箱論壇Oh BTW, if your lecturer talks about "地心引力" in your Physics class.
" o3 p2 P1 b7 ^3 U9 I3 cwww2.tvboxnow.comI suggest you pack and pick other subject instead, if you really like Physics,
. H: f! r7 w7 t7 w+ n( swww2.tvboxnow.comyou need to switch school.tvb now,tvbnow,bttvb( X4 J# l- Q' r2 k" q4 l' P# G
There is no 地心引力, but "gravitational" force only.tvb now,tvbnow,bttvb- v M$ a4 t" B" g2 c. B
A simple meaning of Gravitational force = the force of attraction between any " V: v3 T, r6 Y' r2 _. |; ^. \
two masses.tvb now,tvbnow,bttvb# d2 c* z2 g+ {) l8 Y
1 {5 W( i( I# Z0 O# H& o- {8 SGosh, I got fooled by my HK Physics teacher many years ago. |