The Karate Kid (2010)

 
Concept featured in clip: Air Resistance/Drag
Location of clip: 10:26-12:44 (DVD)


Play Flickclip Here

Summary of clip: Dre and his mother have just moved to China for a job and are getting settled in their new apartment. Dre's mom cannot turn on the hot water, so she sends him to get help from the maintenance man, Mr. Han. Dre finds Mr. Han and watches him kill a fly with a flyswatter. (A modern variation from the original Karate Kid)

Connection of flickclip to the concept: Air resistance is the force caused by air on a moving object. The air applies force in the opposite direction of the moving object and depends on velocity, the shape of the object, and the density of the air.
Suggestions to teachers:

1. Suggested questions for students:

How did Mr. Han kill the fly?

Is it easier to catch a fly with a flyswatter or a rolled up newspaper?

What properties make a flyswatter good for catching flies?

2. Have students explore the following simulation which shows the effects of air resistance on an object in motion. http://phet.colorado.edu/sims/projectile-motion/projectile-motion_en.html

3. Have students drop a series of similar toy figures with different size, shape parachutes. Observe the differences in the falling times.