Simple 2D smooth ball movement

I am working on a very simple, but tricky thing:

I want to move a ball across the screen in a smooth way (in 2D space).

Unfortunately whatever approach I make, I always experience jitter. I am currently evaluating it with the editor Gameview running constantly at 60fps.

Aproach #1)

Apply a Rigidbody to the ball
Mass 0.01

Drag 0

Angular Drag 0

Gravity off

Interpolate Interpolate

Collision Detection Continous

Contraints:

Freeze Position Z

Freeze Rotation X,Y,Z

Starting Movement with:

rigidbody.AddRelativeForce(new Vector3(0, 30, 0));

Does not look very bad, but its not a smooth animation

Approach #2)

Without rigidbody

Vector3 velocity = new Vector3 (0,30,0);

void FixedUpdate()

{
Vector3 velocityComponent = velocity * Time.fixedDeltaTime;
transform.position = transform.position + velocityComponent;
}

still no good results

Take a look at Vector3.SmoothDamp. And if you really need a rigidbody, you should toggle Kinematic in rigidbodies’ parameters.