A satellite was launched in order to observe the Saturn. At the moment the distance between the satellite and the Saturn was

10 km with an attractive force 10,000 N. While after 20

seconds, the distance decreased to 5 km, what is the force

then (in N)?

Well the magnitude of its acceleration related to that car starts with the oil change like when you have to change the oil in your car you have to make sure that your precious car is starting really propley and very well

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.

The object's initial distance above the groundthe object's initial velocity

On a roller coaster, the area with the highest potential energy is when it is on top of a hill/height.