what isthe effeect of altitude on the maxmimum and minimum speeds of airplane?

Answer 1

The higher the thinner the air is. This equals less drag and faster. Thin air has les resistance so turning is effected.

Answer 2

In principle, none; with sufficient power, an airplane can go at any maximum speed at any altitude. The minimum speed will be lower at low altitude because the stalling speed depends on the indicated (as opposed to the true) airspeed, which, for a particular true airspeed, will be higher at low altitudes where the density is higher. The maximum speed will be higher at high altitudes where the drag is less, although since the air is colder at high altitude, the speed of sound will be lower and it takes about three times as much power to go supersonic as to go subsonic.

Answer 3

Higher it goes less drag on the airframe because of less dense air meaning higher topspeeds. But also because jet engines are just as efficient as they are at 5000 compared to 30,000 feet because of compression. But depends on what kind of engine if just prop engine isnt gonna be able to go that high. However lower altitudes allow the plane to be much more manueverable because it provides much more lift then higher altitude