public void OnCollisionExit(Collision collision)

Collision

In contrast to OnTriggerExit, OnCollisionExit is passed the Collision class and not a Collider. The Collision class contains information about contact points, impact velocity etc. If you don't use collisionInfo in the function, leave out the collisionInfo parameter as this avoids unneccessary calculations. Notes: Collision events are only sent if one of the colliders also has a non-kinematic rigidbody attached. Collision events will be sent to disabled MonoBehaviours, to allow enabling Behaviours in response to collisions.

using UnityEngine;public class Example : MonoBehaviour{    void OnCollisionExit(Collision collisionInfo)    {        print("No longer in contact with " + collisionInfo.transform.name);    }}