Back when I was just starting my Mun missions for the first time I had an issue with a ship being a bit too tall and narrow and I landed on a hill just a bit too steep. My rocket tipped over slowly and I had already learned that a horizontal launch along the ground is not that great of an idea. I sent up my rescue ship which was admittedly almost exactly the same ship (took science parts off the top thinking it would help stabilize it on the hill). My rescue ship did the exact same slow motion fall as my first rocket. Rescue mission 2 was launched and I attempted, only god knows why, to land between the two rockets. I clipped my landing gear on one ship with just a bit of horizontal velocity and panicked and sent my 2nd rescue ship hurtling into my ship with my Kerbal at an alarming speed. Rescue mission 3 was not necessary