指定したObjectのColliderにAddForceするUdonSharpスクリプト

ObjectAddForce.cs

using UdonSharp;
using UnityEngine;
using VRC.SDKBase;
using VRC.Udon;

public class ObjectAddForce : UdonSharpBehaviour
{
    [SerializeField] private Collider targetObject;
    [SerializeField] private Vector3 forceRatio;
    public override void Interact()
    {
        var targetRigidBody = targetObject.GetComponent<Rigidbody> ();
        if (targetObject == null) return;

        targetRigidBody.AddForce(forceRatio, ForceMode.Impulse);
    }
}