Using OnCollisionEnter with 3 objects

I'm trying to make a little game ish in my class but i just began programming a few weeks ago. So i want to do so when i hit an object, with my player it moves a different object. So when Players (1) hit my stribe, i want Death1 to move (ignore death2). but i don't know how to put in that i want it to move death1, so it only moves my stribe right now.

using System.Collections; using System.Collections.Generic; using UnityEngine;

[SerializeField] GameObject Death1; [SerializeField] GameObject Death2;

 private void OnCollisionEnter(Collision col)
 {
     if (col.gameObject.name == "Players (1)")
     {
         Vector3 playerPosition = transform.position;
         playerPosition.x = 1.7f;
         transform.position = playerPosition;
     }

void Start () { Death1 = GetComponent(); Death2 = GetComponent(); }