A ball is projected upward with an initial speed of approximately 40 m/s . The diagram at the right represents its position at 1 second intervals of time . At what location will the ball of moving downward with a speed of approximately 30 m/s?

The speed was not exceeded so it was slow

One splits the atoms and molecules  the other combines them

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.