Simulate.cs

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

[RequireComponent(typeof(LineRenderer))]
public class Simulate : MonoBehaviour
{
    [SerializeField] Transform target;
    [SerializeField] LineRenderer line;

    [SerializeField][Range(0.001f, 10)] float maxTime = 5;
    [SerializeField] [Range(0, 12)] int power = 5;

    private List<Vector3> positions = new List<Vector3>();
    private Vector3 presposition = Vector3.zero;
    private int prePower = -1;

    private Transform startPosition;


    private void Start()
    {
        startPosition = transform;
    }

    void Update ()
    {
        Physics.autoSimulation = false;

        if (presposition == transform.position && power == prePower)
            return;

        presposition = transform.position;
        prePower = power;

        positions.Clear();
        ResetRigidbody();

        AddForce();

        ProgressSimulate();

        line.positionCount = positions.Count;
        line.SetPositions(positions.ToArray());
    }

    private void OnDisable()
    {
        Physics.autoSimulation = true;
        ResetRigidbody();
    }

    private void AddForce()
    {
        var rig = target.GetComponent<Rigidbody>();
        rig.AddForce(new Vector3(1, 1, 0) * power, ForceMode.Impulse);
    }

    private void ProgressSimulate()
    {
        float time = 0;
        float deltaTime = Time.fixedDeltaTime;
        while (time < maxTime)
        {
            Physics.Simulate(deltaTime);
            time += deltaTime;

            positions.Add(target.position);
        }
    }

    void ResetRigidbody()
    {
        target.position = startPosition.position;
        target.rotation = startPosition.rotation;
        var rig = target.GetComponent<Rigidbody>();
        rig.velocity = Vector3.zero;
        rig.angularVelocity = Vector3.zero;
    }
}