Actually, the smoke particles have very small movements - so the air molecules hitting them must have a smaller mass - if they were bigger than the smoke , then the particles would be displaced by much larger amounts.
kinetic theory states that heat energy involves the vibration of molecules at...
If you wanted to see how the cold front and warm front works, click here! http://www.classzone.com/books/earth_science/terc/content/visualizations/es2002/es2002page01.cfm?chapter_no=visualization
Hope that works! :smile: