9-9-08 Unseen forces

In class today we began with an activity about unseen forces, more specifically, air resistance. In this activity we made three identical test copters from 8.5" X 11" paper. These copters were then dropped from 3 meters in the air and the time was recorded. We then answered questions regarding the how and why the results were different on each individual test. We cam to the conclusion that air resistance was the biggest factor in determining the outcome. Other things such as human interference with the timer and also human error accounts for some variance.