jill is pushing a box across the floor. which represents the upward for…

jill is pushing a box across the floor. which represents the upward force perpendicular to the floor?
○ fₚ
○ fᵣ
○ fₙ
○ f₉

Brief Explanations

In physics, the normal force is the upward force perpendicular to a surface. It is commonly denoted as $F_N$.

C. $F_N$