A flight condition where the airplane increases altitude (or height). This motion is due to imbalanced forces acting on the airplane. The lift is greater than the weight of the airplane.

• Force
• Structure
• Climb

A limitation or a restriction. Constraints might include limits on time, materials, or size.

• Drag
• Constraint
• limitation

A flight condition where the airplane maintains a constant speed and altitude. The forces acting on the airplane are balanced. The lift is equal to the weight, and the thrust is equal to the drag.

• Cruising Flight
• Aircraft
• Wewight

All types of vehicles that fly or move through the air.

• Aircraft
• Car
• Stored Energy

Project Lead The Way

• PLTWW
• PLWT
• PLTW

Drag

• Resistance that slows an object down in the air
• Not being able see
• Not being able to fly without an motor

A force that pushes objects upward

• lift
• glide
• force

Which forces must be increased to cause an airplane to take off?

• Lift, Drag, Weight, Thrust
• Weight, Lift, Force, 
• Speed, Sound, Light

When an aircraft is cruising, are the forces balanced or unbalanced? 

• The maintain the same amount of pressure.
• Airplanes maintains a constant speed and altitude causes the forces on the airplane to become balanced.
• The weight and thrust must maintain the same on the back and sides of the eingine.

A flight condition where the airplane decreases altitude (or height). This change is due to imbalanced forces acting on the airplane. The lift is less than the weight of the airplane.

• Climb
• Descent
• Design