GameObject falls instead flying horizontally at max height

Seems like a dumb question, but I would like to make my game object falls as soon as it reaches the max height, instead flying “horizontally” at max height, when the force is applied.

This is my codes:

FixedUpdate() {
	if (transform.position.y >= maxHeight) {

		transform.position = new Vector2 (transform.position.x,  maxHeight);
		spirit.GetComponent<Rigidbody2D> ().AddForce (new Vector2(0, -60));

The force is seemed “never” applied to it.

If I removed

transform.position = new Vector2 (transform.position.x, spirit.maxHeight);

It would fly over the maximum height.

How to make the game object falls immediately when it reaches the maximum height?

you should use the rigidbody.velocity vector. If max height then

spirit.rigidbody.velocity = spirit.rigidbody.velocity * -1; // or apply some const fall velocity

or reset the velocity before you add the force like:

spirit.rigidbody.velocity =;
spirit.rigidbody.velocity.AddForce(new Vector3(0, -60, 0));