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# Newton's Laws

### Forces and Dynamics

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

Newton’s 2nd Law | (Total force) = (mass of an object)(acceleration); F = ma |

Force – reaction | the other of the forces of interaction; distinguishes from the “partner” force acting during an interaction |

Force pair | when two different objects influence each other through an interaction |

Interaction | when a pair of objects act; one object experiences one of the forces; the other object experiences the other force |

Net force | the vector sum of all forces acting on an object |

Newton’s 1st Law | Law of inertia: an object want to continue “keep doing what it is doing”(velocity unchanged; stay at rest or continuing in a straight line); Must be acted on by a force to change velocity, called an acceleration |

Newton’s 2nd Law | Quantitative expression of the effect of a set of forces acting; acceleration = (net force)/(mass) |

Newton’s 3rd Law | when a pair of objects interact, the force on each is equal in magnitude but in opposite directions; the magnitude of the acceleration each experiences is given by Newton’s 2nd Law, depends on the individual masses |

Terminal velocity | the condition of the net force equal zero; when the fluid friction equals the weight of an object; zero acceleration |

Force - Action | Arbitrary name for one of two forces; the other is the "reaction" |

Created by:
brownglarry