# Motion: Question Preview (ID: 23076)

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A runner starts a 5 km race at 10:15 a.m. and finishes at 10:35 a.m. Given this information, you can calculate the runner's |
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a) average speed. | b) velocity. | c) acceleration. | d) reference point. | |

In can be important to know the velocity of an object, not just its speed, because |
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a) velocity also tells direction. | b) speed is only useful for fast moving objects. | c) speed is always an average. | d) velocity also tells acceleration. | |

The trunk of a certain tree is 50 cm thick. Each year it gets thicker by 1 cm. How thick will the trunk be in 50 years? |
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a) 100 cm | b) 50 cm | c) 5000 cm | d) 2500 cm | |

A rider finishes a 120 km bicycle trip in 3 hours. The average speed of the rider is |
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a) 40 km/hr | b) 360 km/hr | c) 4 m/s^2 | d) 3.6 m/s | |

How many centimeters are in a kilometer? |
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a) 100000 | b) 1000000 | c) 1000 | d) 100 | |

A car traveling at 25 m/s speeds up to 40 m/s over a period of 15 seconds. The average acceleration of the car is |
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a) 1 m/s^2 | b) 15 km/s^2 | c) 15 m/s^2 | d) cannot be calculated from the information given | |

An airplane that moves 50 meters in one second has a speed of |
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a) 180000 m/h | b) 500 cm/s | c) 5000 m/hr | d) 1800 km/h | |

Speed measurements are given in units of |
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a) distance/time | b) distance/time^2 | c) time^2/ distance | d) time/distance | |

Measurements of acceleration are given in units of |
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a) distance/time^2 | b) distance/time | c) time^2/distance | d) time/distance | |

An airplane flies 80 km in 10 minutes and then flies 100 km in 20 minutes. The average speed of the airplane is |
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a) 360 km/h | b) 60 km/h | c) 8 km/h | d) none of the above | |

An object is in motion if it is moving relative to a(n) |
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a) reference point | b) moving object | c) direction | d) speed | |

To calculate acceleration, divide the change in ___________ by the time during which the acceleration occurs. |
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a) velocity | b) speed | c) direction | d) slope | |

The velocity of an object gives both its speed and __________. |
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a) direction | b) acceleration | c) time | d) movement | |

You can calculate an average ________ if you know both the total distance and the total time of a trip. |
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a) speed | b) velocity | c) acceleration | d) distance | |

An object cannot be accelerating if it has a constant speed. |
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a) True | b) False | c) | d) | |

The information needed for describing velocity is distance/time and direction. |
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a) True | b) False | c) | d) | |

To determine the speed of an object, divide distance by acceleration. |
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a) True | b) False | c) | d) | |

An object is in motion only if its distance from a reference point is stationary. |
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a) True | b) False | c) | d) | |

If you know the speed of an object, you also know the direction of movement. |
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a) True | b) False | c) | d) | |

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To play games using the questions from the data set above, visit ReviewGameZone.com and enter game ID number: 23076 in the upper right hand corner at ReviewGameZone.com or simply click on the link above this text.

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