1. By: Ava and Audrey

2. Thrust Thrust is forward motion. The airplane’s engine’s produce thrust. It is one of the forces that the airplane needs to fly. It is also used to overcome drag. Information: http://www.grc.nasa.gov/WWW/k- 12/airplane/thrust1.html

3. Lift Lift is an upward force. It is one of the forces that holds the airplane in the air. You need lift to overcome gravity. That is what the airplane’s wings are for. Information: http://www.grc.nasa.gov/WWW/k-12/airplane/lift1.html

4. Drag Drag is the resistance of air. It is one of the forces that you need to overcome in order to be able to fly. Drag pulls the airplane the opposite way. Information: http://www.grc.nasa.gov/WWW/k- 12/airplane/drag1.html

5. Weight You need to overcome weight, or the force of gravity. Weight goes in a downward direction. To overcome weight, you need to have lift. Information: https://howthingsfly.si.edu/forces-flight/four-forces

6. Airfoil Shape