Thursday, March 22, 2007

Science Project: Rocketry

Fran and Ammon stopped by for a few days and we had a great time launching Ammon's new rocket a few times. If you're like me, you're wondering "How fast does a model rocket go, anyway?"

Take a look at it in action:

This is from about 25 yards away. We don't get to see the whole flight, but we get enough of it to estimate its terminal velocity. Using a program out of Kenyon College, I tracked its motion frame-by-frame.

I calibrated the distances in the video with the height of my brother-in-law. Ammon is ~68 inches tall, which makes him about 13 pixels tall at 25 yards.

The green "plusses" in the frame on the right are the data points I used to figure out the terminal velocity of the rocket:

A couple of conclusions from this:
1. That max speed is 38 meters per second, or about 90 miles an hour!
2. Think I'm just too white and nerdy.


Souza said...

No comment

Wally said...

The words your looking for are "totally cool, man!"