Help with script to calculate force needed for projectile to reach target in 2D

Hi,
Does anyone have a script to calculate the force necessary for a projectile to reach a certain point based on a specific launch angle, something like a mortar? For a 2D project, dealing only with x and y coordinates.

The info I have is the local projectile position, the target position, and the launch angle. I need a script to calculate the force needed to be applied in the projectile, via GetComponent<Rigidbody2D>().AddForce(new Vector2(x, y), ForceMode2D.Impulse);.

I have spent the last hours reading posts and tried several scripts and cannot get it to work.

If someone has a example script for 2D it would really help me.

Thx,

 

ok I was finally able to get it to work somewhat following this post https://answers.unity.com/questions/148399/shooting-a-cannonball.html

But this formula does not work if there is too much difference in the Y axis between the source and target, wonder if theres a script that works at any height?