I have no idea whether or not this is a ridiculous question, so I am just going to ask it. My question is based on the concept that energy must be added to ions to get them to form compounds (such as the formation of hydrogen iodide). Typically (or so my chemistry text book says), the addition of heat energy is the catalyst for these reactions. However, I also recently learned that light energy can also serve the role of catalyst (photochemical reactions). Can kinetic energy also somehow serve as a catalyst? Basically, can energy added to the system by means of increasing the systems velocity, thereby increasing the systems total kinetic energy, start a reaction? Feel free to call me an idiot if my question is ridiculous. I'm a physics major, not a chemistry major...haha.