Why does using larger particles make average impulses tend to zero?

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binbagsss
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account for the fact that air molecules have a smaller mass?

I have down in my notes something about if a larger particle was used then the average impulses would tend to 0, could someone please explain this?

thanks a lot !
 

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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 all temperatures above absolute zero - the Brownian motion observations confirm that warm air molecules are in constant motion(vibration). Hope that helps your question! :smile:

-Earthmosphere