Yes, they always have at least 7 different motor speeds never less
It depends on... * the type of plane (size/shape) * the height when engines failed * the speed when engines failed ...and probably other factors.
A plane can accelerate at high speeds in short time is because it has powerful engines in it. Most of the times such engines uses highly purified form of kerosene. Aerodynamics of that plane also helps to gain speed.
Mach speed is by definition the ratio of the speed of fluid moving through an object vs sound. It is often used with mechanical objects such as diffusers and nozzles. Plane engines and car engines have items in them that have "mach speed."
Speed control (right grip)
In the cockpit there are levers (1 for each engine) which control the fuel flow to the engines. by adjusting these and supplying different amounts of fuel to the engines the pilot controls the amount of thrust produced and subsiquently the speed
Planes pick up speed by using their engines to generate thrust, which propels the aircraft forward. As the plane gains speed, the lift generated by the wings increases, allowing the plane to take off into the air. The faster the plane moves, the more lift it creates until it reaches the necessary speed to become airborne.
When a plane is flying at a steady speed, the forces acting on it are balanced. The main forces involved are thrust (from the engines), drag (air resistance), lift (from the wings), and weight (gravity pulling the plane down). These forces work together to keep the plane moving at a constant speed and altitude.
Thrust on a plane is generated by the engines, which push air backwards to create a forward force that propels the aircraft through the air. This forward force overcomes drag to accelerate the plane, allowing it to take off, maintain speed, and climb. Pilots control the amount of thrust to climb, descend, or maintain altitude during flight.
As the jet plane rapidly accelerates on the runway, the engines produce thrust that propels the plane forward. The forward motion creates lift on the wings, allowing the plane to become airborne once a certain speed is reached and the lift overcomes gravity. The acceleration continues until the plane reaches its desired takeoff speed.
Swedish born American John Erickson is credited with the invention of the fire engine. he worked with the solar energy,gravitational and tide, for high speed engines and electric engines
the engines won't get enough power and oxygen if you are too high, and the plane might stall since it will lose speed.
The easiest way to control any electric current to any device is with the inline use of either a manual or electric reistate.