Prove that for a fluid with a constant density flowing at a steady-state through a straight pipe with an entry diameter of D1 and an exit diameter of D2 where D1 > D2, the difference of the velocities, i.e. v2 v1 (velocity out velocity in), has a positive value. Suppose that for the same system, the ratio of the velocities v2/v1 = 16, what is the relationship between D1 and D2?

Prove that for a fluid with a constant density p flowing at a steady-state through a straight pipe with an entry diameter of D1 and an exit diameter of D2 where D1 > D2, the difference of the velocities, i.e. V2 - V1 (velocity out - velocity in), has a positive value. Suppose that for the same system, the ratio of the velocities V2/V1 = 16, what is the relationship between D1 and D2