Problem: Two particles each have a mass of 6.90 x 10-3 kg. One has a charge of +5.0 x 10-6 C, and the other has a charge of -5.0 x 10-6 C. They are initially held at rest at a distance of 0.65 m apart. Both are then released and accelerate toward each other.
Part A: How fast is each particle moving when the separation between them is one-half its initial value?
I need help to determine how fast is each particle moving.