Answer:
Explanation:
The statement says the following:
We need to find 'u' given that we know the following terms:
, m, g, ∅
The way to do that is to substitute not known expression into known expression, we will use the expression of
in
This leads to
Finally we can obtain 'u' by dividing the whole equation with the terms that are with 'u'
We have this
Where 'u' is the variable that you are looking for