The southern hemisphere would be having winter
I can think of two reasons right away . . .
1). There's no air in space. Nothing to fill your lungs with,
so you can't scream.
2). Even if you had a lung full of air and could scream, sound
needs something like air to travel through. With no air in space,
the sound from you couldn't go anywhere.
ball drops 45m under g=10m/s/s
45=1/2x10xt^2 ... application of kinematic equaion from rest
90/10=t^2
t=3
24.0 m in 3 secs => 8m/s no air resistance