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# ExplorCreaw/Phyics

### 11th grade, "Exploring Creation with Physics" Module 1

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

Vector quantity | a physical measurement that contains directional information |

Scalar quantity | A physical measurement that does not contain directional information |

Definition of Displacement | a change in an object's position |

Definition of position | Where an object is located |

Definition of acceleration | how is the motion changing; the time rate of change of an object's velocity; M/SEC^2 |

System Internationale | SI; the standard units of fundamental quantities in science. |

Factor-label method | a method to convert measurements from one unit to another |

accuracy | how close a measurement is to the actual, exact value |

Definition of Precision | The consistency reproducibility of a measurement and is closely related to a measurement's uncertainty. |

Significant figures | a non-zero; it is a zero that is between two significant figures; it is a zero at the end of the number and to the right of the decimal point |

addition and subtracting with significant figures | round your answer so that it has the same precision as the least precise measurement in the equation |

multiplying and dividing with significant figures | round the answer so that it has the same number of significant figures as the measurement with the fewest significant figures |

Definition of velocity | the time rate of change of an object's position; how quickly an object's position is changing |

Definition of Speed | the time rate of change of the distance traveled by an object |

Why velocity is relative | because everyone who observes a velocity is at a different stand point |

relativity | how something looks to you compared to someone else's view |

the slope of a position-versus-time curve is | the velocity |

instantaneous velocity | the velocity of an object at one moment in time |

average velocity | the velocity of an object over an extended period of time |

what kind of graphs are studied to learn about acceleration? | velocity versus time graph |

the slope of a velocity versus time graph is | the acceleration |

what kind of graphs are studied to learn about velocity? | position versus time graph |

the slope of a position versus time graph is | the velocity |

the velocity and acceleration have the same sign, the object is | speeding up |

the velocity and acceleration have opposite signs, the object is | slowing down |

acceleration is zero when | the curve in a graph is flat |

if velocity is zero | acceleration could or could not be zero |

if acceleration is zero | the velocity could or could not be zero |

how to determine the velocity of an object relative to another | take the velocity of the thing being observed and subtract it from the velocity of the observer |