Sorry for the inconvenience I jus need the 5 points
#4 is correct.
For #5, don't get all tangled up. Just close your eyes, breathe deeply, and murmur "F equals M A. Force equals mass times acceleration."
The force is 15N. The mass is 12kg. You really shouldn't have any trouble calculating the acceleration.
The winds are usually named based on the compass direction the wind is blowing from.
