Professional Application Using mass and speed data from Example 8.1 and assuming that the football player catches the ball with his feet off the ground with both of them moving horizontally, calculate: (a) the final velocity if the ball and player are going in the same direction and (b) the loss of kinetic energy in this case. (c) Repeat parts (a) and (b) for the situation in which the ball and the player are going in opposite directions. Might the loss of kinetic energy be related to how much it hurts to catch the pass?
Lecture 8 objectives 1. Describe the common characteristics of all connective tissue and their roles in the body Creating structural framework, protecting delicate organs, storing energy reserves, defending the body from microorganisms, defending the body from microorganisms, transport fluids and dissolve materials (blood and lymph). E xtracellular Matrix space between cells; contains fiber which provide support, g round substance which fills in all space between cells and fibers determines the consent of the connective tissue 2. Describe the types of cells, fibers, and ground substance comprising connective tissue proper and recognize the most common arrangements of CT proper in the body Found everywhere in the body. Predominant cell type is Fibroblast. Ground substance dense syrup consistency: contains a large amount of sugar and proteins which binds to a large amount of water. Connective tissue proper is arranged into sheets call F ascia Cells types Fibroblasts the primary cell types; produce fibers and most components of ground substance Mesenchymal cells stem cells Adipocytes fat cells Melanocytes produce and store melanin pigment Mast cells histamine containing cells involved in inflammation Lymphocytes Disease fighting white blood cells Extracellular Fibers Collagen strength Elastic stretch and recoil Reticular fine networks Loose connective tissue proper Allows for migrating cells, blood vessels, nerves lots of ground sub
