7. what are the three types of friction and how are they different?
there are four types of friction: static, sliding, rolling, and fluid friction. static, sliding, and rolling friction occur between solid surfaces. static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. fluid friction occurs in fluids, which are liquids or gases.
answer; ///i do believe that the correct answer is ; ///(physical change); /////
d, water vapor. gaseous state would have more kinetic energy, they are moving faster. if you have to compare the same state, then higher temperature would have the higher kinetic energy. but if you have solid and liquid at the same temperature - then liquid would have more.