The state of the object on which the net force is zero is 'constant uniform motion',
or 'unaccelerated motion'.
At first you have to write the variables out which are

now you have to combine like terms


now you add these two variables and end up with answer of
cumulus: fluffy cotton balls
stratus: overcast days, rainfall
cirrus: fair weather
fog: warm air over cold ground
just passed this quiz
The Thames, my dear child.
*** River Thames***
not ''Thames River''