your example of the plane crashing into the building results in the plane disappearing (if you don’t see the inside of the building), at least 911 style, a Cessna on the other hand just jams in or falls off – which are you looking for? or are the objects supposed to start changing shape before they arrive? Do they add to the height of the stack we can see? It looks like a rectangular shape arriving at a rectangular shape, other than squash/stretch (some scaling) to match dimensions it doesn’t look like a morph is needed.