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# PBHS Ch11--2

### Newton's Laws, Part 2

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

Action-Reaction | Newton's 3rd Law is sometimes called |

force | This is what is equal, but opposite in Newton's 3rd Law |

pairs | Forces always occur in these |

equal | Colliding forces are always this in size |

momentum | Mass times velocity calculates this |

mass x velocity | Momentum is calculated using this formula |

kg-m/s | The SI derived unit for momentum is this |

transferred | What happens to the momentum from one object to another in a collision |

conserved | In an isolated system, the total amount of momentum is |

gases | Rockets propel themselves by pushing off of their |

rocket | In rocket propulsion, the force pair is rocket on gases, gases on |

mass | The gases accelerate out of the rocket so fast because of the rocket's great amount of |

1st | Newton's laws of motion about inertia |

2nd | Newton's law showing the relationship of acceleration to force and mass |

3rd | Newton's law of action-reaction forces |

velocity | Momentum is mass times this |

p | Momentum is represented by the letter, |

acceleration | Force divided by mass is this |

simultaneously | Force pairs occur at this time |

conservation | The total momentum before a collision is equal to the total momentum after a collision is the law of __ of momentum. |

Created by:
gkarlish