Question by vitokvachadze_unity · Feb 04, 2020 at 02:45 PM · unity 2d collision2d

Elastic collisions between cubes and walls

I have a simple scene with two cubes and walls as shown bellow.

The right ball starts moving with initial instant force along the x-axis and collides with the first ball and reflect off a vertical wall. Each collision in the system is supposed to be absolutely elastic.

I just need to add some initial force to the right ball and everything else will happen by itself

     Rigidbody2D rb;
     void Start()
     {
         rb = GetComponent<Rigidbody2D>();
         rb.AddForce(new Vector2(-1,0), ForceMode2D.Impulse);
     }

I also add Rigidbody2D and Physics material on walls and cubes with Friction 0, Bounciness 1 and Gravity Scale 0.

But there is no bounce in the scene

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