• Newton’s third law can also be phrased in terms of momentum: for any closed system of objects, the total momentum remains . Note that momentum can be exchanged between two objects in a closed system. However, the change in momentum for one object must be to change in momentum of the other object. • Fill in the appropriate units for each quantity: momentum: impulse:

Answer:   [a]:   "slate" .

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.