A bird perched on a swing has a mass of 62.8 g. The base of the swing has a mass of 118.0 g . Assume that the swing and the bird are originally at rest and that the bird then takes off in a horizontal direction at 2.18 m/s. If the base can swing freely (i. e., without friction) around the pivot, how high (in cm) will the base of the swing rise above its original level?

50 meters per 5 seconds

From negative to negative

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.