Recent content by twilightkeyblader

Two people ride their bikes to work. Person A rides to work in 10 minutes, while Person B takes 30 minutes. Which one did more work, which one is more tired, and which one used more power?

Imagine there is a giant air hocket table, several miles across. Because there is a layer of air everywhere, there is no friction. Now two fans are placed on the disc. If the right fan turns on, the disc will be pushed to the left. If the left fan is on, it will be pushed to the right. a) If...