Ed Van Den Berg, Jover Nuñez, Alfredo Guirit, Cor Van Huis
Here is a simple experiment demonstrating impulse and momentum that was picked up from a Japanese presenter at a physics teacher conference held in Cebu City. We have not been able to trace the experiment farther and have never seen it in print. After student-author Nuñez demonstrated it during an exam on conducting demonstrations, we converted the qualitative idea into a quanitative experiment and even discovered some possibilities for student research. The lab is also suitable as homework, since it uses universally available "equipment"-cotton buds (swabs), drinking straws, and a ruler.
University of San Carlos, Talamban Campus, Cebu City, 6000, Philippines; Faculty of Education, Hogeschool Amsterdam, Amsterdam, Netherlands
