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# SLS Sci 10 motion SZ

Term | Definition |
---|---|

average velocity | the rate of change in position |

displacement | describes the straight-line distance and direction from one point to another |

distance | a scalar quantity that describes the length of a path between two points or locations |

position | a vector quantity that describes a specific point relative to a reference point |

position-time-graph | when you plot the time data on the horizontal axis (called the x-axis) and the position data on the vertical axis (called the y-axis) |

scalars | has magnitude only |

slope | refers to whether a line is horizontal or goes up or down at an angle |

speed | the magnitude of the velocity |

uniform motions | travel equal displacements in equal time intervals |

vectors | has both a magnitude and a direction |

velocity | the displacement of an object during a time interval divided by the time interval |

acceleration | the rate of change in velocity |

acceleration due to gravity | 9.8m/s/s downwards |

air resistance | a friction-like force that opposes the motion of object that move through the air |

average acceleration | the slope of a velocity-time graph |

change in velocity | Vf - Vi |

constant acceleration | the object's velocity is changing at a constant rate |

deceleration | acceleration that is opposite to the direction of motion |

gravity | an attractive force that acts between two or more masses |

velocity-time-graph | provides information about the object's velocity and acceleration |

Created by:
schang2