The figure shows four forces exerted on a moving box, moving at a constant speed. If the box continues to move with the same speed in the same direction, which statement is correct? F1 is equal to F4 and F2 is greater than F3.
F1 is equal to F2 and F3 is greater than F4.
F3 is equal to F4 and F1 is equal to F2.
F3 is equal to F4 and F1 is less than F2.

I think it’s C but I’m not sure

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.