The Speed of a plane needs to be between 70 and 140 mph
each plane has a set take off speed , flap position and weight for take off
This varies depends on the size of the plane. A smaller aircraft like Cessna would need a very less take-off speed than a Boeing. The average take-off speed is 280kmph.
Take off speed is different for different aircrafts. There is no one speed for all aircraft. Usually depending on the load etc, take off speed would be the speed at which enough lift is generated to enable the aicraft to lift off the ground.
Lift is what ultimatly causes the plane to take off. When a plane get up to take off speed, that means the wings are generating enough lift to lift the plane up. The pilot will change the planes angle of attack with the elevators (located on the horizontal stabilizers) to the wind which forces engine thrust to push the plane into the air.
It is the speed at which a plane can achieve sufficient lift to take-off and safely climb with one engine failed during take-off roll after v1.
Flaps are the devices that extend off the back of the wing. They are used for take off as well as landing. They increase lift and reduce the speed at which airflow over the wing is disrupted, thereby resulting in a slower approach and landing speed.
Some plane's are made to take off and land on water
Depends on the plane
A Boeing 777 has a take off speed of about 165 to 215 miles per hour. A typical Boeing 777 can carry 314 to 451 passengers and is a long-range wide-body plane.
A plane cannot typically take off when winds speeds going from side to side or crosswinds, exceed 35 knots. Consistent winds in excess of 50 knots will shut down most airport operations.
Take a 75-300 ton plane, planes need to take off by running on a runway because to take off the plane needs preasure under it's wing so that the preasure can lift the plane up in the sky. The runway has to be atleast 2KM long so that the plane has time to reach it's appropriate speed to take off. people have tried and tried but always failed trying to make a 70-300 ton plane fly just by using a (underbody thruster engine), only one plane succeeded the the or project and that plane was the "harier."