During a circus act, an elderly performer thrills the crowd by catching a cannon ball shot at him. The cannon ball has a mass of 10.0 kg and the horizontal component of its velocity is 8.00 m/s when the 65.0-kg performer catches it. If the performer is on nearly frictionless roller skates, what is his recoil velocity?
Chapter 6 6.1 The Functions of the Skeletal System (pg. 216-220): Bone (osseous tissue): o Hard, dense connective tissue that forms skeleton. o Supports the body o Bone marrow: Yellow marrow: contains adipose tissue Red marrow: produces blood cells (red, white, platelets) o Mostly inorganic material: Hydroxyapatite- gives bone its hardness and strength o Cells of the bone: Osteoblast-forms new bone through synthesis and secretion of collagen and calcium Osteocyte- osteoblast that is trapped in the matrix it deposited Osteogenic cells: mitotically active bone cells that develop into osteoblasts Osteoclast- breaks down bone Cartilage: o Spongy bone o Semi-ridged connective tissue o Provides flexibility Skeletal system: o System made of bone and cartilage o Functions: Support body Allow movement Point of attachment for muscles Protect organs Produce blood cells Store and release minerals and fats Particularly calcium and phosphorus 6.3 Bone structure (pg. 222-232): Long bone: o Diaphysis: shaft running between proximal and distal end of the bone Composed of dense bone