These are pictures from our Alaska trip (yet again) when we went white water rafting. I was pretty scared at first because being the clumsy person that I am, I was sure I was going to fly out of the raft once we hit some kind of turbulence in the water (hey, that involves collisions and projectiles!). I made it though (thank God), and it wasn't as bad as I thought it was going to be. Since it wasn't hard-core white water rafting (we didn't even have to wear helmets), going through the rapids was actually really fun! It was kind of like being on one of those rides in Disneyland (except without seat belts). Anyways, on to the physics of it all...The force of the river gave our raft enough momentum so that we didn't have to do any paddling, even as we floated through the calmer parts of the river. I guess torque was also involved because our raft was pretty stable and no one fell in the water. The steersman of our raft also had to use torque and leverage through his paddles to maneuver the raft around these huge rocks sticking out of the water (when I first saw one of those things, I was sure I was going to die). Our suits also made me think of the last few chapters we studied because they insulated us from the freeeeeezing water, like how a piece of rubber or wood can protect someone from getting shocked. Looking back at the pictures, our suits also kind of made us look like weird spacemen or aquatic divers or something....