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# BIOMEC-Chapter 10-15

### BIOMEC- Chapter 10-15

Word | Definition |
---|---|

kinematics | the form, pattern, or sequencing of movement with respect to time |

linear displacement | change in location |

linear velocity | the rate of change in location displacement/time |

acceleration | the rate of change in linear velocity change in velocity/time |

relative angle | angle at a joint formed between the longitudinal axes of adjacent body segments |

absolute angle | angular orientation of a body segment with respect to a fixed line of reference |

angular displacement | change in angular position |

angular velocity | the rate of change in angular position angular displacement/time |

angular acceleration | the rate of change in angular velocity change in angular velocity/time |

law of inertia | a body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state |

law of acceleration | a force applied to a body causes acceleration of that body |

law of reaction | for every action there is an equal and opposite reaction |

friction | a force acting over the area of contact between two surfaces |

momentum | quantity of motion possessed by a body |

principle of conservation of momentum | in the absence of external forces, the total momentum of a given system remains constant |

impulse | the product of a force and the time interval over which the force acts |

mechanical work | the product of a force applied against a resistance and the displacement of the resistance in the direction of the force |

mechanical power | the rate of work production |

mechanical energy | the capacity to do work |

kinetic energy | energy of motion |

torque | the rotary effect of a force about an axis of rotation |

moment of inertia | represents resistance to angular acceleration |

fluid | a substance that flows or continuously deforms when subjected to a shear stress |

laminar flow | smooth, parallel layers of fluid |

turbulent flow | mixing of adjacent fluid layers |

Archimedes' principle | buoyant force acting on a body is equal to the weight of the fluid displaced by the body |

floating | occurs when the buoyant force is greater than or equal to the body weight |

drag | a force caused by the dynamic action of a fluid that acts in the direction of the freestream fluid flow |

form drag | a pressure differential between the lead and rear sides of a body moving through a fluid |

wave drag | the generation of waves at the interface between two different fluids such as air and water |

lift | a force acting on a body in a fluid in a direction perpendicular to the fluid flow |

foil | a shape capable of generating lift in a fluid |

Bernouli principle | an expression of the inverse relationship between relative velocity and relative pressure in fluid flow |

Magnus effect | deviation in the trajectory of a spinning object toward the direction of spin |

Created by:
afetterolf