I agree, I heard that astronaut cannot pee or shit while they are in space.
' t* I: D2 L7 t# I4 v. z公仔箱論壇It must be a painful joruney.
0 r, r. t3 V$ i. Q' s ~' y% V# e/ wOh BTW, if your lecturer talks about "地心引力" in your Physics class.
6 p: X' H6 t( i. e5 atvb now,tvbnow,bttvbI suggest you pack and pick other subject instead, if you really like Physics, tvb now,tvbnow,bttvb. v+ f9 ^* U1 }. _+ J5 A
you need to switch school.- u+ j$ A4 c* q
There is no 地心引力, but "gravitational" force only.
7 [3 N2 p4 H5 h+ Z6 ztvb now,tvbnow,bttvbA simple meaning of Gravitational force = the force of attraction between any tvb now,tvbnow,bttvb8 A& H+ C8 I& \+ d/ F
two masses.1 N+ G$ ^8 l# |5 B* @ @! d+ r
W( Z, b$ q1 H. J% X. rGosh, I got fooled by my HK Physics teacher many years ago. |