Given that the flight is 10 feet per second, we want to know how many inches per second it is.
Note that:
1 foot = 12 inches
Let 10 feet = x inches
Then we find the value of x
This means that
[tex]\begin{gathered} x\text{ = 12}\times10 \\ =\text{ 12}0 \end{gathered}[/tex]Therefore, there are 120 inches