PC and digital camera assisted study of projectile motion

Yajun Wei Lijun Cui

A-level Center Affiliated to Nanjing University, 210093, Nanjing, China

We present a projectile motion experiment with the help of digital camera and PC for data acquisition and processing. In this experiment to study projectile motion with water stream, a photo of the water path is taken and the pixels coordinate of the photo is obtained to measure the length. This method is more effective and accurate than the traditional method. The experiment presents the idea of using digital camera and PC to measure distance and inspires students to look for new methods to solve problems.