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# Fources

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

Momentum | the product of an object's mass and its velocity |

Formula for Monentum | m=pv |

Law of Consevation of Momentum | the totl momentum of any group of objects remains the same unlss outside forces also act on the objects |

Force | a push or a pull that gives energy to an obct |

Units of Force | fources are measurd in Newtons; N |

Net Force | the total of all the forces acting on an object |

Inertia | the tendency of matter to resist a change in ts motion |

Balanced Force(s) | the net force acting on an object is zero |

Unbalanced Force(s) | te net force acting on an object is not zero |

Magnitude | the amount (size)of a measurement |

Friction | a force that one surface exerts on another when the two surfaces are in contact with each otr |

Static Fricon | friction between non-moving objects |

Kinetic Friction | friction between moving objects |

Sliding Friction | friction between objects that slide (rub) against each other |

Rolling Friction | occurs when an object rolls over a surface |

Fluid Friction | occurs when an object moves though a fluid or a gas |

Newton's First Law of Motion | objects at rest will stay at rest and objects in motion will stay in motion at a constant velocity unless acted on by an unbalanced force |

Newton's Second Law of Motion | the net force acting on an object is equal to the product of the object's mass and acceleration |

Newton's Third Law of Motion | for ecery action force there is a reaction force that is equal, but acts in the oppisite direction |

Kaw of Universal Gravitation | all objects in the universe are attracted to each other; strength of attraction depends on the objects' masses and distance from each other |

Freefall | the motion of an object when GRAVITY is the only force acting on it |

Terminal Velocity | greatest velocity of a falling object; occurs when the force of GRAVITY is EQUAL to the force of FRICTION |

Weight | a measure of the force of GRAVITY on an object |

Mass | the amount of matter in something |

Centripetal Force | the force that is pulling an object in circular motion towards the center of the circle |

Geosynchronous Orbit | occurs when an object orbits another object at a rate equal to the 2nd object's rate of rotaion |