Boeing 737-300; Flaps 40; Landing Weight of 78000 lbs (A) gives me a VSO (B) extrapolated from VREF chart is 82.3 knots.
Same airplane at 132300 lbs, same flaps, the speed is 112.3 Knots.
(A) A weight probably typical for empty airplane, two pilots, enough fuel to make a takeoff and landing with reserves.
(B) Stall speed, or minimum steady flight speed in the landing configuration.
In reality, many factors affect the speed at which the pilot pulls back on the flight yoke (called VR or "rotation" speed) and the speed at which the aircraft can safely leave the ground. The minimum takeoff speed is typically at least 1.3 times the speed at which it is moving quickly enough to actually generate lift (called "VS"). The variables include aircraft weight (more weight requires a faster takeoff speed), temperature, airport elevation, humidity, and degree of flaps (up to a point, increased flaps create greater lift in the wings and may allow a slower takeoff speed).
Therefore, in order to fly the aircraft as safely as possible, numerous speeds including VR (rotation speed), V1 (continue takeoff even with one engine out), V2 (safety climbing speed with one engine out) and VREF (touchdown speed) must be computed in advance. On most modern-day airliners, the cockpit is supplied with a Flight Management System in which pilots can enter weight and flap conditions and the system will compute several speeds used during takeoff and landing.
All commercial (heavy) aircraft have a range of landing speeds which vary according to landing weight and configuration (flap setting). The normal range for the 747 for various weights and flap settings is around 130 to 160 kts.
Speed: Establish 220 KIAS
"Landing Speed 145 KIAS"