LineRenderer fails tracing 2D object with addForce

I'm trying to add a LineRenderer to a 2D bouncing ball. The ball starts with:

 rigidbody.AddForce (new Vector3(speed * 50, -jumpSpeed, 0));

Uses rigidbody's gravity and calls Jump() function when collides with the floor:

    public void Jump(){
             rigidbody.velocity = new Vector3(rigidbody.velocity.x, 0, 0);
             rigidbody.AddForce (new Vector3(0, jumpSpeed * 50, 0));
         }

But the trails acts weird just when the ball bounces with the floor:

My trail configuration is:

Can someone help me?