Rigidbody curve help needed

I USED rigidbody.addforce method

using UnityEngine;
using System.Collections;

public class test : MonoBehaviour {
    void OnCollisionEnter(Collision other)
 {
  
      rigidbody.AddForce(0, 10, 0);

 }
}

but im not getting curve like object falling.it travels like angular force

but now i want to make the object move like a curve after collision.pls help me to do this.i have
attached image for reference.

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1097751--41249--$sdfg.GIF

Add a small force in the direction you want your ball to bounce… for example (0,10,2)

thanks .u helped me in short and sweet.