A ski jumper travels down a slope and leaves the ski track moving in the horizontal direction with a speed of 23 m/s as in the figure. The landing incline below her falls off with a slope of θ = 43◦ . The acceleration of gravity is 9.8 m/s squared. Determine how long the ski jumper is airborne.

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.