Acceleration example for Unity

AccelerationControl.cs

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

public class AccelerationControl : MonoBehaviour
{

	public float Speed = 50f;
	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update ()
	{
		float horAcceleration = Input.acceleration.x;
		Vector2 translate = Vector2.one;
		if (horAcceleration > 0)
		{
			translate = Vector2.right;
			
		}
		else
		{
			translate = Vector2.left;
		}
		transform.Translate(translate * Speed * Time.deltaTime);
	}
}