How Does Air Resistance Affect Engine Force in Accelerating Airplanes?

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In summary, air resistance is the force that opposes an object's motion as it moves through the air. It can slow down objects and is affected by factors such as size, shape, speed, and air density. While it can be beneficial for flight, it can also be reduced by making objects more streamlined.
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tine002
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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?
 
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welcome to pf!

hi tine002! welcome to pf! :wink:

Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
 

What is air resistance?

Air resistance is the force that slows down or opposes the motion of an object as it moves through the air. It is caused by the collision of air molecules with the surface of the object.

How does air resistance affect the motion of an object?

Air resistance acts in the opposite direction of an object's motion, slowing it down. This can cause objects to fall at different rates, depending on their size, shape, and weight.

What factors affect the amount of air resistance an object experiences?

The amount of air resistance an object experiences depends on its size, shape, speed, and the density of the air it is moving through. Objects with larger surface areas, such as parachutes, experience more air resistance than smaller objects.

Can air resistance ever be beneficial?

Yes, air resistance can be beneficial in certain situations. For example, it allows birds to fly and helps planes stay in the air. Parachutes also use air resistance to slow down and land safely.

How can air resistance be reduced?

Air resistance can be reduced by making an object more streamlined or aerodynamic, which means it can move through the air with less resistance. This is why cars and airplanes are designed with smooth, curved surfaces.

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