How Does Air Resistance Affect Engine Force in Accelerating Airplanes?

[tine002]

As an airplane (mass 620 kg) increases its speed, air resistance increases.

a) What force must the engines exert in order to accelerate the plane at a rate of 2.4 m/s2 if the airplane is flying at a speed of 20 m/s, with the air resistance at 300N?

b) What force must the engines exert if the plane is flying at a constant speed of 50 m/s, with the air resistance at 1.8 kN?

 

[tiny-tim]

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