A 20 kg body is moving through space (ignore gravity) in the positive direction of an x axis with a speed vi when, due to an internal explosion, it breaks into two pieces. Piece A has a mass of 8 kg moves away from the point of explosion with a speed vA in a direction 30° measured counterclockwise from the +x direction. Piece B with a mass of 12 kg moves along the y axis with a speed of 400 m/s. Goal: Determine the speeds vA and vi..

Sorry i don’t know what to do

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.

When is this