Today was a beautiful day, perfect for launching the tennis ball cannon on the football field. We had a lot of good shots, and took videos of two of them with an iPhone. The first video was shot from the goal line, and landed in the end zone on the other side of the field. The second shot was also shot from the goal line, but it landed well into the track on the other side, for a total distance of 145 yards!
We wrapped the videos up in the app, and have made them available for student analysis. Enjoy, and please let us know if you are using them in your classes!
We just finished uploading six (really five, because we were able to reuse one of the scenarios) new high-speed videos for Video Motion Analysis called “Horizontal Atwood Lab”. We also put together a very simple lab activity to go with it, suitable for an introductory high school physics classes. In the activity, students analyze sets of three videos to determine the relationships between acceleration and total mass, and acceleration and force. Students should be able to finish the activity in about 30 minutes.
Now that the analysis apps are built, shooting new videos and uploading them goes fairly quickly. Let us know if you have any videos that you would like to see for your class!
We are pleased to announce “Video Motion Analysis“, a new set of apps on www.simbucket.com. Each app features one video shot with a high-speed camera. Students can scroll through each frame and take careful measurements. Some of the apps contain more advanced plotting, graphing, and analysis tools so that students can collect, plot, and analyze the data directly within the app.
We tried the “Ball Launched At An Angle” videos today with our students. Using the graphing and slope calculation tools, they were quickly able to determine that horizontal acceleration is always zero, and vertical acceleration is always 9.8 m/s² downward, no matter which videos they selected for analysis.
We are continuing to shoot video, and hope to have many more videos available for analysis over the coming months. If you have a physics lab that you do with your students and would like us to shoot video, please let us know. We will do our best to recreate it for you and make it available on www.simbucket.com.
The new Video Motion Analysis section can be found on the www.simbucket.com homepage, or via the following direct link.