Video for drag, dimensional analysis, and coffee filters

Here is a short video showing a single coffee filter dropped from 3.5 feet and two stacked filters dropped from 5 feet. It goes with version one of the ‘drag, dimensional analysis, and coffee filters‘ demonstration.

It took about 10 tries to get it this close. (full video)


You can also use paper cup cake holders if you are not a coffee drinker. This one only took two attempts, though my helpers had been practicing with the coffee filters (full video)


You may need to click on the GIF to get it to animate.

Don’t forget to follow @nbkaye on twitter for updates to this blog. If you have a demonstration that you use in class that you would like to share on this blog please email me (

Thanks to my two sisters-in-law, Helen and Leila, for helping with the video.


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