All forces require an input of

- mass
- energy
- speed
- atoms

Energy is the correct answer. I hope I helped you

Speed.

Explanation:

Motion simply is just movement but it needs a force to make it move simply is just movement but it needs a force to make it move. A force is a push is a push is a push or pull on an object, which causes things to move or or pull on an object,

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.