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# Kinematics Review

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

Define Scalar | Quantities that are a fully described magnitude |

Define Vector | Quantities that are fully described by both a magnitude and a direction |

Define Velocity | Rate of change of position |

Define Acceleration | Rate of change of velocity |

Define Mechanics | The study of describing motion using diagrams, words, numbers, graphs, and equations |

Distance: Scalar or Vector | Scalar |

Displacement: Scalar or Vector | Vector |

Speed: Scalar or Vector | Scalar |

Velocity: Scalar or Vector | Vector |

Acceleration: Scalar or Vector | Vector |

5 Miles: Scalar or Vector | Scalar |

2 in, up: Scalar or Vector | Vector |

20 Degrees Fahrenheit: Scalar or Vector | Scalar |

3ft North: Scalar or Vector | Vector |

If you walked 15 meters to the right and then 6 to the left what is your displacement if the origin is 0? | 9 Meters |

If you walked 6 to the right and 3 to the left what is the distance? | 9 Meters |

An object is moving for 10 seconds and went a total distance of 100 meters. What was the speed? | 10 m/s |

T/F If the velocity of an object is constant, its acceleration must be zero | True |

T/F An object can be moving for 10 seconds and still have zero displacement | True |

T/F A vector is a large quantity and a scalar is a small quantity | False |

T/F The quantity 20 m/s is a speed and such is a scalar quantity | True |

An object was traveling for 10 m/s and went a total of 20 meters. How long did it take them to reach the 20 meters? | 2 seconds |

Formula for velocity | Xf - Xi --------- t |

What do you round to when calculating velocity? | Hundreths |

An object starts 10 meters from the origin and ended up -3 meters from the origin. This took 13 seconds. What is the velocity? | -1 m/s |

Falling at an average acceleration of 9.8 m/s/s. If the object falls how long will it take for it to reach a speed of 49 m/s? | 5 seconds |

_____ Slope = positive direction | Uphill |

_____ Slope = negative direction | Downhill |

Constant velocity is a _______ line | Straight |

Changing velocity is a _______ line | Curved |

A curved line = _______ | Acceleration |

An object is stopped when the line is _________ | Horizontal |

If the line is horizontal it's velocity is ______ m/s | Zero |

To find velocity you take displacement divided by ______ | Time |

Slope = _______ | Velocity |

If the object is going in a negative direction it's velocity is _____ | Negative |

If the object is going in a positive direction it's velocity is _____ | Positive |

Constant velocity is represented by a _______ line | Horizontal |

Changing velocity is represented by a ________ line | Straight |

Slope = _________ | Acceleration |

When the object is a rest it crosses the ___ axis | X |

When the object speeds up it is going _____ the X-axis | Away |

When the object slows down it is going _____ the X-axis | Towards |