Moving multiple objects(same objects) in different directions

So I have one object, that is instantiated into a circle shape.

I’m trying to make it so each of those child objects are sent in each their own direction.

How would I go by as to do this? Since using something like

transform.position += new Vector3 (0.0f, 10.0f * Time.deltaTime, 0.0f);

Causes all the objects to fly in a single direction.

You could add a field:

public Vector3 origin;

And have your objects move away from this origin:

Vector3 direction = (transform.position - origin).normalized;
transform.position += direction * Time.deltaTime * 10.0f;