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# Chap. 1 Kubalsky

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

The starting point you choose to describe the position/location of an object. | reference point |

An object's distance and direction from a reference point. | position |

The process of changing position. | motion |

The difference between the initial (first) position and the final position of an object. | displacement |

A measure of the distance an object travels per unit of time. | speed |

The rate of change of position in which the same distance is traveled each second. | constant speed |

Speed at a specific INSTANT in time. | instantaneous |

The total distance traveled divided by the total time taken to travel that distance. | average speed |

The speed and direction of a moving object. | velocity |

A measure of the change in velocity during a period of time. | Acceleration |

TRUE or FALSE The distance an object moves is the actual length of its path. | True |

You can calculate units of speed by dividing the ____________ ________________by the ________it takes to go that distance. | distance traveled (s=d/t) time |

What can you use to show the relationship between speed and time and to determine information about the acceleration of an object? | A speed-time graph |

The __________of an object can be described by the object's position, velocity, and acceleration. | motion |

To calculate acceleration: subtract final ______ from initial ______. Subtract lesser ______from greater _______. ___________speed by time. | speed time Divide |

What are three ways an object can accelerate? | Speeding up, slowing down, changing direction |

What are ways velocity can change? | When the speed of an object changes, when the direction of an object changes, or when both speed and direction change, |

How can you describe the position of an object in two dimensions? | Use two directions to describe it. |

What's the difference between distance and displacement? | Distance is the length of the path. Displacement is the difference between the first position and the final position. |