# Chapter 12: Question Preview (ID: 5979)

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The law that states that the unbalanced for acting on an object equals the object\'s mass times its acceleration is |
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a) Newton\'s First Law of Motion | b) the law of conservation of momentum | c) Newton\'s Third Law of Motion | d) Newton\'s Second Law of Motion | |

If 2 objects with different masses and trav eling with different velocities collide, what law allows you to predict the motion of the objects after the collision? |
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a) Newton\'s Third Law of Motion | b) the law of universal gravitation | c) the law of conservation of momentum | d) Newton\'s Second Law of Motion | |

Express the following as an equation. One newton is the force that can give an object with a mass of 1kg an acceleration of 1/m^2 |
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a) 1 N=1 kg / 1ms^2 | b) 1 N=1ms^2 x 1 kg | c) 1 N=1ms^2 /1 kg | d) 1 N x 1 kg / = 1ms^2 | |

What happens immediately after a sky diver opens her parachute |
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a) air resistance greatly increases | b) the foce of gravity greatly increases | c) the sky diver\'s speed increases | d) the sky diver is in a free fall | |

Which statement illustrates Newton\'s first law? |
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a) A stone will not move unless something pushes or pulls it | b) all of the answers are correct | c) As a car comes to a stop, the passangers continue to move forward | d) A ball rolling across the floor eventually slows down | |

What unbalanced force is needed to give a 976 kg vehicle an acceleration of 2.50m/s^2 |
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a) 9.9 X 10^9 N | b) 9.9 X 10^9 lb | c) 2.44 X 10^9 N | d) 2.44 X 10^9 lb | |

Which of the following objects exerts a gravitation force |
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a) a bowling ball | b) a book | c) a feather | d) all of the answers are correct | |

How much does a 59 kg woman weigh on Earth? |
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a) 6.02 N | b) 59 lb | c) 145 lb | d) 578 N | |

What is the momentum of a 255 g apple falling at 18 m/s |
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a) 4.08 m/s^2 downward | b) 4.08 kg x m/s^2 downward | c) 15.9 m/s^2 downward | d) 15.9 kg x m/s^2 downward | |

How does the total momentum of the two objects before a collision compare with the total momentum after the collision? |
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a) It is the same | b) It is less | c) It is equal to zero | d) It is greater | |

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