Air Resistance on Projectiles & Terminal Velocity - IB Physics

This high school level lecture covers the effect of air resistance on an object's path, and the velocity and acceleration graphs of motion of the object as it reaches terminal velocity, and moves from one medium to another. I show an example of a projectile with and without air resistance, and analyze and explain the patterns that form on acceleration graphs and velocity graphs for different objects with air resistance, including a skydiver. We sometimes call these problems "air resistance in free fall" but this name is not technically correct, because by definition the only force on an object in free fall is gravity, so the presence of air resistance means that it is technically no longer in free fall. 0:00 Definition of Air Resistance 0:29 Acceleration and Air Resistance 1:08 Paths of Projectiles with Air Resistance 2:35 Acceleration Graphs with Air Resistance 4:32 Velocity Graphs with Air Resistance 5:03 Terminal Velocity on a V-t Graph 5:43 Graphs of Objects Changing Mediums: Falling Ball 8:11 Graphs of Objects Changing Mediums: Skydiver 9:37 Conclusion