How long is the flea in the air from the time it jumps to the time it hits the ground

Answer: 0.59246 secondsexplanation: use s = u t + 1/2 a t^2 0.430 = 0 + 1/2 x 9.8 x t^2 0.860 / 9.8 = t^2 t = 0.29623 seconds (this is for the way up) 2 x 0.29623 = 0.59246 seconds

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.