It would depend on altitude of runway, strength of headwind, all-up weight, but think about 180mph.
It depends on the airplane. A Boeing 747 needs to go 160 knots before you can take off in it; a Cessna 172 needs to go 55 knots to take off.
The Boeing 747's takeoff speed if 156knts or 180mph.Take off speed for 747-400 fully loaded is 155-160 knots or almost 300 km/h or 180 mph. About the speed of of an F1 racer down a long straight.The standard speed for a Boeing 747 to take off is at about 120 miles per hour.Take off speed for 747-400 fully loaded is 155-160 knots or almost 300 km/h or 180 mph. About the speed of of an F1 racer down a long straight.
speeds depend on the weather condition and how long the runway is but usally a 747 takes off at 150-154 knots.
to gain speed for take off
It depends on the airplane. A 747 is a lot louder than a King Air, which is louder than a Piper Warrior. But a 747 is quieter than an F/A-18 taking off from an aircraft carrier.
About 160 Knots
each plane has a set take off speed , flap position and weight for take off
It then produces lift due to wing configuration and can take off
The lift off speed is dependant upon the weight of the aircraft. The heavier the aircraft the higher the speed. At maximum take off weight of 875,000 lbs (396,890 kgs) Vr (rotation speed) will be about 175 knots and V2 about 185 knots.
The takeoff speed of a Boeing 747 can vary depending on factors such as weight, runway length, and weather conditions. However, generally speaking, the takeoff speed of a Boeing 747 is around 180-200 knots (207-230 mph).
The answer depends upon several factors, but a fully loaded 747-400 taking off from a sea level airport with a temperature of 15 C would be taking off with a speen of about 185 knots.
Depends on the aircraft, can be anywhere from 40 to 160 mph.