Watch the following video tutorial on the force of air resistance and then take the quiz.

Air Resistance Video

Summary:

• Force of air resistance on a moving object increases with the object’s speed and size.

• Because air resistance is not a constant force, falling objects don’t have a constant acceleration when air resistance is significant.

• Air resistance force is noticeable if it’s at least comparable to an object’s weight.

• When the upward force of air resistance balances the downward force of gravity the falling motion transitions into uniform motion (i.e., constant speed).
Have a question? Go here.

Optional: Watch these videos of the "Feather and Coin" demonstration:

Feather and Coin Video #1

Feather and Coin Video #2