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# Hannah's stack

### Apologia Physical Science Module 11

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

What is Newton's 1st Universal Law of Gravitation? | All objects with mass are attracted to one another by the gravitational force. |

What is Newton's 2nd Universal Law of Gravitation? | The gravitational force between two masses is directly proportional to the mass of each object. |

What is Newton's 3rd Universal Law of Gravitation? | The gravitational force between two masses is inversely proportional to the square of the distance between those objects |

What is Centripetal force? | The force necessary to make an object move in a circle. It is directed perpendicular to the velocity of the object, which means it points toward the center of the circle. |

What is the 1st general principle regarding centripetal force? | Circular motion requires centripetal force. |

What is the 2nd general principle regarding centripetal force? | The larger the centripetal force, the faster an object travels in a circle of a given size. |

What is the 3rd general principle regarding centripetal force? | At a given speed, the larger the centripetal force, the smaller the circle. |