Assignment #6: Applications of Integration 1. The volume V, in liters, of air in the lungs during a five-second respiratory cycle is approximated by the model V = 0.1729t + 0.1522t2 - 0.0374t3, where t is the time in seconds. Approximate the average volume of air in the lungs during one cycle. 2. Suppose that a particle moves along a straight line with velocity v(t) = 4 - 2t, where 0