Question

Two positive charges are placed a few centimeters apart and then released so that they can move freely. What will happen to the electrostatic force between them as time goes on?

Answer 1

The electrostatic force between them F will decrease. It is because the distance between them r will increase:

$$F=\frac{kq_1q_2}{r^2}$$

As both charges are positive they will repel eachh other.