when youre talking about airplanes, it divides into 3 or 4 :
- fixed wing
- non-fixed wing (helicopters)
- hybrid (V-22 osprey, etc)
how they land :
* hybrid and choppers/helicopters lands as it goes down slowly (decreasing altitude) with very slow horizontal speeds 0 - 3 mph
* rockets land (to be retrieved and to be used again) usually to the ocean / sea / lake by using parachute(s)
* the least is the most common which is fixed wing aircrafts, this divides into two, the old generation ( mustang, DC-3 type) usually the nose is level OR pitch up a bit, as the main landing gear touches the runway and gets slower, the aircraft gets more pitch up, the nose is more up til the rear landing gear touches down.
for fixed wing aircrafts that are made in 1940s and later, the nose is certainly pitch up about 2 to 15 degrees (depends on aircraft type), then as it goes down slowly (decreasing altitude) as the main landing gear touches the runway, the nose is pitched down to level (to about zero degree) as level as the runway, then the nose landing gear touches the runway, and aircraft slows down.
There are some features when they land, i.e. using parachutes, engine thrust reversing, airbrake, etc
1 thing common in fixed wing is that when they land, they are slow down to a safe speed (which is a bit higher than stall speed) just to get down (to have the altitude dcreasing)
NOTE: also, not only using wheels, aircrafts use skiis (and floats)
when they land in ice and/or water
my own brain + memory