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# Motion and Momentum

### Motion/Momentum Grade 8 Science Vocabulary - LMS

Question | Answers |
---|---|

What is ACCELERATION? | The rate at which an object changes its velocity; occurs when an object speeds up, slows down, or turns. |

What is INERTIA? | The tendency of an object to resist a change in its motion. |

What is the LAW OF CONSERVATION OF MOMENTUM? | States that the total momentum of objects that collide with each other is the same before and after the collision. |

What is MASS? | The amount of matter in an object. |

What is MOMENTUM? | A measure of how difficult it is to stop a moving object. |

How do we find the SPEED of an object? | Distance Traveled/Time of Travel |

What is VELOCITY? | The speed and direction of a moving object. |

What is INSTANTANEOUS SPEED? | The speed of an object at one instant in time. |

What is DISPLACEMENT? | The distance between the STARTING and ENDING points and the DIRECTION in which you travel. It is often the SHORTEST distance between two points. |

How do we find the MOMENTUM of an object? (What is the formula?) | Mass x Velocity |

What is the FORMULA for ACCELERATION? | Change in Velocity/Time |

How do we find the AVERAGE SPEED of an object? (What is the formula?) | Total Distance/Time Traveled |

What does AVERAGE SPEED mean? | The average of all instantaneous speeds. |

What does SPEED mean? | How fast an object is moving or the rate at which an object covers distance. |