What physics rule(s) does project demonstrate?
My son (6 years old) came up with a science fair project. We need your help to decide what principles it demonstrates: We have a battery-powered spinning fan on which we placed a nerf dart (the ones with a suction cup) on the top. When it is not spinning, the dart is straight, when we spin it, the dart appears to bend. This is probably a backwards way to come up with a science project, but it is my son’s first and I want to help him with his idea. Any help is appreciated.