# SCI 155 Chap 2b: Question Preview (ID: 9049)

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The equation (distance / time) represents |
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a) density | b) acceleration | c) speed | d) momentum | |

The equation (change in velocity / time) represents |
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a) density | b) acceleration | c) speed | d) momentum | |

The equation (mass x velocity) represents |
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a) density | b) acceleration | c) speed | d) momentum | |

When an object is in free fall, its velocity is |
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a) constant | b) increasing | c) decreasing | d) | |

When an object is in free fall, its acceleration is |
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a) constant | b) increasing | c) decreasing | d) | |

A ball rolling across the floor slows to a stop because |
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a) there is a net force acting on it | b) the net force equals zero | c) the forces are balanced | d) the force that started it moving wears out | |

What is the acceleration if a car goes from 8 mi/h to 20 mi/h in 2 seconds? |
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a) 4 mi/h/s | b) 6 mi/h/s | c) 10 mi/h/s | d) | |

A moving car has momentum. If it moves three times as fast, its momentum will |
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a) stay the same | b) triple | c) cut in three | d) go to zero | |

To measure an object's inertia, you would measure its |
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a) volume | b) mass | c) speed | d) | |

The force that keeps an object moving in a circular path is |
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a) centrifugal | b) net | c) centripetal | d) inertia | |

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