Michael pushes on the handle of a 12-kg lawn mower. The force of friction between the mower and the grass is 9 N. The handle makes a 35° angle with the horizontal. Michael wants to accelerate the mower at a rate of 0.8m/s2. What force must he apply along the handle?

Answer8.0m;

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.