jill is pushing a box across the floor. which represents the upward force perpendicular to the floor?\n○…

jill is pushing a box across the floor. which represents the upward force perpendicular to the floor?\n○ $f_p$\n○ $f_f$\n○ $f_n$\n○ $f_g$

jill is pushing a box across the floor. which represents the upward force perpendicular to the floor?\n○ $f_p$\n○ $f_f$\n○ $f_n$\n○ $f_g$

Answer

Brief Explanations:

In physics, the normal force ($F_N$) is the upward force perpendicular to a surface. $F_p$ is usually a pushing force, $F_f$ is friction force, and $F_g$ is gravitational force acting downwards.

Answer:

C. $F_N$