Sugarless gum can also be used as a vehicle to deliver medicaments that may benefit oral and systemic health. Chewing gum products can be formulated to assist caries reduction by remineralization or neutralization of plaque acid.
The net force on the object then, is zero, and the result is that the velocity of the object remains constant. Terminal velocity is the highest velocity attainable by an object as it falls through a fluid (air is the most common example, but the concept applies equally to any fluid). It occurs when the sum of the drag force (Fd) and the buoyancy is equal to the downward force of gravity (FG) acting on the object.
It creeps up closer and closer, with the terminal velocity just being the limit. The time it takes to get very close to the terminal velocity VF is a few times VF/g, where g is the gravitational acceleration. Lee discusses that above. The actual form for the time-dependent velocity v(t) is v(t)+VF*tanh(gt/VF). See for more discussion.