What are the two most common disorders in the united states? anxiety and sleeping disorder depression and schizophrenia anxiety and adjustment disorder anxiety and depression

its anxiety and depression, anxiety is the #1 most common disorder in the U.S. and depression is fairly common so thats my guess

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.