# BIOMECHANICS linear and angular kinematics

rename
mitchell345's
version from
2015-10-15 15:47

## Section 1

Question | Answer |
---|---|

kinematics | the form, pattern, or sequencing of movement with no respect to time |

linear displace meant | change in location, or the directed distance from Initial to final location (measured in straight line) |

Linear velocity | rate of change in location (displacement or change in position / change in time) |

Speed | Length (or distance) / Change in time |

Linear acceleration | rate of change in linear velocity ( a = Change in velocity / Change of time ) |

Projectile | body in free fall that is subject only to the forces of gravity and air resistance |

Trajectory | flight of path of a projectile |

what factors that determine projectiles motion? | 1. projection angle 2. projection speed 3. height of projection 4. air resistance |

Angle of projection | direction at which a body is projected with respect to the horizontal |

Projection Speed | the magnitude of projection velocity |

relative projection height | the difference between projection height and landing height |

range | horizontal displacement of a projectile at landing |

## Section 2

Question | Answer |
---|---|

instant center | precisely located center of rotation at a joint at a given instant in time |

Angular Displacement | change in the angular position or orientation of a line segment |

Radian | used in angular kinematic quantity conversions equal to 57.3 |

Angular speed | Angular Distance / Change in Time |

Angular Velocity | rate of change in the angular position or orientation of a line segment ( w = change in position / change in time ) |

Angular Acceleration | rate of change in angular velocity (change of w / change of time) |

radius of rotation | distance from the axis of rotation to a point of interest on a rotating body |

tangential acceleration | component of accelereation of a body in angular motion directed along a tangent to the path of motion; represents change in linear speed |

radial acceleration | component of acceleration of a body in angular motion directed TOWARD THE CENTER OF A CURVATURE; represents a change of direction |

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

angular distance | the sum of all angular changes |

Tangential Acceleration formula? | At = V1 -V2 / T OR radius x acceleration |

angular acceleration formula | Ar = V^2 / T |

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