UNITY rojectile Prediction

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

public static Vector2[] Plot(Rigidbody2D rigidbody, Vector2 pos, Vector2 velocity, int steps)
 {
     Vector2[] results = new Vector2[steps];

     float timestep = Time.fixedDeltaTime / Physics2D.velocityIterations;
     Vector2 gravityAccel = Physics2D.gravity * rigidbody.gravityScale * timestep * timestep;
     float drag = 1f - timestep * rigidbody.drag;
     Vector2 moveStep = velocity * timestep;

     for (int i = 0; i < steps; ++i)
     {
         moveStep += gravityAccel;
         moveStep *= drag;
         pos += moveStep;
         results[i] = pos;
     }

     return results;
 }