M A player kicks a ball with a force of 25 N for 0.02 seconds that has an initial momentum of -0.4 kg.
to change its direction.
S
external force
of 25 N for
0.02 seconds
-.4 kg'm/s
What is the final momentum of the object in the figure above?
Your answer should have one significant figure.
m
kg
S

Letter a, because when there are unlike charges they will always attract to each other.

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.