Rotation stops when reload scene

hi every one i have problem with reload the scene SceneManager.LoadScene(“game”);
in my game i have ball spinning all the time but when i restart the scene The rotation stops after restarting the scene .
this is ball script

void Update () {
		s += Time.deltaTime * 0.04f;
		transform.Rotate (0,0,- Time.deltaTime * s * (2 * 3.141593f * 0.1231894f) * 100);

	}

please help me

Yes, I also have this problem