Let's ignore any frictional forces in the winch in VP 9.8.1. Let v1v1 be the speed of the bucket after it has fallen a distance h/2h/2 and v2v2 be speed of the bucket after it has fallen the full depth of the well, hh. Determine the ratio of the speeds, v2v1v2v1. Express your answer to three significant figures.

The answer is a i think

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.