Momentum–depth relationship in a rectangular channel Momentum–depth relationship in a rectangular channel In classical physics, momentum is the product of mass and velocity and is a vector quantity, but in fluid mechanics it is treated as a longitudinal quantity (i.e. one dimension) evaluated in the direction of flow. Additionally, it is evaluated as momentum per unit time, corresponding to the product of mass flow rate and velocity, and therefore it has units of force. The momentum forces considered in open channel flow are dynamic force – dependent of depth and flow rate – and static force – dependent of depth – both affected by gravity. The
N. S. Krishnan dialogues and expressed them in his drama and films so that the message came across, but the subject was not offended. He acted in nearly 150 Tamil films and the matinee-duo of N. S. Krishnan and T. A. Madhuram (later his wife) was very popular in his day; he also did roles along with leading stage and cine artists such as T. S. Durairaj, "Pulimootai" Ramasamy, C.S. Pandian and writers such as Udumalai Narayana Kavi and Subbu Armugham and gave a number of hits. He was a talented singer and his hits include "Sivakavi", "Raja Rani", and "Manamagal". Though he