Think about what you already know. Why might two objects be affected differently if the same strength force is exerted on them?

The reason for two objects being impacted differently even a similar strength of the force is applied/exerted to them:

- Two objects might be affected differently on the application of a force of the same strength owing to the difference in their masses.

Learn more about "Velocity" here:

link

Explanation:

If the same strength force is exerted on two objects, but the objects have the different masses, the object with less mass will have a greater change in velocity. ... Forces affect motion because they can change an objects motion.

an electric circuit

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.