Objects not move when out of camera

Questions & Answers
1

this objects use rigibody and move wiht fusion

rigidbody.AddForce(Vector3.left * 400);

and

void OnCollisionEnter(Collision collision)
{
 if (collision.gameObject.tag == "enemy")
   Physics.IgnoreCollision(collision.collider, collider);
}

for ignore collision objects of the same type.
When the distance between Player and Objects more 40 objects not move.
but I move camera in Unity3d editor While run to this objects,Objects retun move again.

How fix it ?

2

I hope you understand this.
4524-outofcamera.png

Why Enemy objects 2 doesn’t move when Camera form Enemy objects 2 distance moer 40 and It can fix this ?