If two people of different masses say 50kg and 100kg were to suddenly jump off a building , why would the person with more mass attain a higher terminal velocity? I thought mass was irrelevant. I missed 1 lesson on this in class but this part I don't understand properly. If they were the same shape would the person with mass 100kg still have a greater terminal velocity? Edit: A object reaches terminal velocity when the drag force is equal to the weight of the object; so am I right to say that W=mg comes into this and the person with more mass has more weight so more drag is needed to reach terminal velocity?