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.
180 mph
speeds depend on the weather condition and how long the runway is but usally a 747 takes off at 150-154 knots.
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.
This can vary depending on weather and weight, but can be between 180-210 knots
The Maximum Take-Off Weight for a Boeing 747-100 is 333, 390kg; a Boeing 747-200 and 747-300 is 377,842kg; a Boeing 747-400 is 396,890kg; a Boeing 747-400ER is 412,775kg and the Boeing 747-8I is 442,253kg.
The maximum take-off weight of a Boeing 747-400 is 875,000 lbs
It would depend on altitude of runway, strength of headwind, all-up weight, but think about 180mph.
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.
A 747's max take-off weight is 910,000 pounds.
The maximum speed of a 747 is Mach 0.92.
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.
No. The speed of takeoff depends on multiple factors including (But not limited to): aircraft weight, wingspan, wind speed, and aerodynamics of the aircraft. For example: A Hang Glider takes off at a significantly slower speed than a 747.