What explains the dramatically different magnitudes of accelerations that result when a mosquito collides head on with a moving truck? what explains the dramatically different magnitudes of accelerations that result when a mosquito collides head on with a moving truck? unequal masses of the bus and the mosquito different directions of motion of the bus and the mosquito unequal velocities of the bus and the mosquito unequal forces exerted on the bus and the mosquito?

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.