I do not understand Net Force at all- I would really appreciate it! I'll also include a brainliest since it is quite a bit! Thank you!

See below

Explanation:

Net Force is the force which is the sum of all the forces acting on object i.e. pushing of pulling.

Net Force:

1)   4N (net force is 4N to the left)

2)  2 - 7 = -5N (net force is 5N to the left)

3)  4 - 4 = 0  (net force Zero)

4)  6 + 3 = 9N (net force is 9N to the right)

5)  4 - 8 = -4N (net force is 4N to the left)

6)  4 - 5 = -1N (net force is 1N to the left)

7)  -3 - 3 = -6N (net force is 6N to the left)

8)  2 + 4 - 5 = 1N (net force is 1N to the right)

9)  3 - 6 = -3N (net force is 3N to the left)

10.  4 + 4 - 7 - 1N (net force is 1N to the right)  

vapour or gas assuming atmospheriv pressure