BPK 142 Lecture Notes - Lecture 6: Exhalation, Functional Residual Capacity, Chronic Obstructive Pulmonary Disease
16 Jun 2016
School
Department
Course
Professor
Document Summary
Feb 16 notes biomechanics & pulmonary structure and function. Law of inertia: (1st law) a body will maintain a state of rest or constant velocity unless acted on by an external force that changes that state . Amt of inertia a body possesses is proportional to its mass. Law of acceleration: (2nd law) force = mass x acceleration . Law of reaction: (3rd law) when one body exerts a force on a second body, the second body exerts a reaction force equal in magnitude and opposite in direction of the first body. For every action there is an equal and opposite reaction. Momentum: a quantity that is important in situations involving collisions (kg/sec) Units of work 1. 0 nm = 1. 0 j (joule) Power = work per unit time = fd / t = force x velocity. Units of power watts - 1. 0 w = 1. 0 j/s. Running speed/velocity = stride length x stride rate/frequency.
