A falling bomb should explode upon impact

I haven't added the explosion part yet, but where the particles are spawned, the explosion part will be added later. I've already made the block a falling block, like sand, but I just can't figure out how to detect when the block hits the ground.

Since no one answered I figured it out myself and the solution is actually pretty easy. It does not work if you create an entity and try to make it detect when it touches the ground but a projectile which replaces the falling block has the "when projectile touches ground" feature in the trigger section. I did not try it yet but I guess it works.

Yes idk how I did not came up with this solution before but it seems to work.