Term |
Definition |

Gravity |
Force that pulls an object toward the center of a much larger object. On Earth, it is measured as 9.8 m/s/s |

Net force |
Sum total of all forces (both positive and negative) acting on an object. |

Inertia |
Property of matter which resists a change in motion. |

Friction |
Force that opposes motion. |

Air Resistance |
Upward force that acts to slow down a falling object. |

Newton's 1st Law |
Law of Inertia. States that an objects motion will remain constant unless acted on by an unbalanced force. |

Newton's 2nd Law |
Law of acceleration. States that acceleration depends on an object's mass and the force applied to it. |

Newton's 3rd Law |
Law of action & reaction. States that for every action force there is an equal and opposite reaction force. |

Law of Conservation of Momentum |
States that the total momentum prior to a collision is equal to the total momentum after a collision. Momentum cannot be created or destroyed. |

Position vs. Time Graph |
Graph showing the location of an object relative to the origin. The slope of this graph = the velocity of the object. |

Velocity vs. Time Graph |
Graph showing the speed and direction of an object's motion. The slope of this graph = the acceleration of the object. |