Thaaanks a gajillion!
Could u also do from the same year Q4 part b?
Sorry for the trouble ![Embarrassed :-[](https://studentforums.biz/Smileys/default/embarrassed.gif)
The large number of air particles constantly collide with the dust particles in all directions which keeps most of them away from the ground
PS : however, as the ms says, its an equal probability that the dust particles will collide and fall, we ignore the ambiguity here.