# Unit 7: Momentum Test Review: Question Preview (ID: 16561)

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A pool player hits the cue ball so that it travels with a momentum of 5 kg*m/s striking a purple ball. The purple ball is at rest prior to the perfectly elastic collision. The momentum of the balls after the collision will be: |
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a) The cue ball’s momentum will be 5 kg*m/s. The purple ball’s momentum will be 5 kg*m/s. | b) The cue ball’s momentum will be 0 kg*m/s. The purple ball’s momentum will be 5 kg*m/s. | c) The cue ball’s momentum will be 5 kg*m/s. The purple ball’s momentum will be 0 kg*m/s. | d) The cue ball’s momentum will be 2.5 kg*m/s. The purple ball’s momentum will be 2.5 kg*m/s. | |

Cart A on a track travels with a momentum of 4 kg*m/s before striking Cart B. Cart B is at rest prior to the perfectly elastic collision. The momentum of the carts after the collision will be: |
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a) Cart A’s momentum will be 4 kg*m/s. Cart B’s momentum will be 4 kg*m/s. | b) Cart A’s momentum will be 0 kg*m/s. Cart B’s momentum will be 4 kg*m/s. | c) Cart A’s momentum will be 4 kg*m/s. Cart B’s momentum will be 0 kg*m/s. | d) Cart A’s momentum will be 2 kg*m/s. Cart B’s momentum will be 2 kg*m/s. | |

A garbage truck and an ambulance are traveling down a straight road. The garbage truck is 2 times as massive as the ambulance. The vehicles have the same momentum. Select the statement below that must be true. |
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a) The garbage truck and the ambulance are traveling at the same velocity. | b) The garbage truck is traveling faster than the ambulance. | c) The garbage truck is traveling slower than the ambulance. | d) The garbage truck is traveling in the opposite direction of the ambulance. | |

A racecar and a tank are traveling down a straight road. The tank is 10 times as massive as the racecar. The vehicles have the same momentum. Select the statement below that must be true. |
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a) The racecar and the tank are traveling at the same velocity. | b) The racecar is traveling faster than the tank. | c) The racecar is traveling slower than the tank. | d) The racecar is traveling in the opposite direction of the tank. | |

The formula for momentum is: |
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a) p=mv | b) m=pv | c) m=ws | d) p=ma | |

A 1000-kg car and a 4000-kilogram truck have the same momentum. Select the statement that must be true about their velocities. |
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a) The car and truck are moving at the same velocity. | b) The car and truck are at rest. | c) The car’s velocity is 4 times greater than the truck’s velocity. | d) The truck’s velocity is 4 times greater than the car’s velocity. | |

A 2-N golf ball and a 1-N tennis ball are rolling along a level, straight road. The balls have the same momentum. What physical information can you assume about the mass or motion of the balls? |
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a) The balls move at same velocity. | b) The golf ball moves faster. | c) The tennis ball moves faster. | d) The mass of the balls is the same. | |

A 5-N baseball and a 3-N basketball are rolling along a level, straight road. The balls have the same momentum. What physical information can you assume about the mass or motion of the balls? |
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a) The balls move at same velocity. | b) The baseball moves faster. | c) The basketball moves faster. | d) The mass of the balls is the same. | |

Two cars collide head-on. If the Honda’s momentum before the crash is 600 kg*m/s and the Ferrari’s momentum is -300 kg*m/s, which direction will the cars move after the crash? |
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a) The cars will move in opposite directions. | b) The cars will stop immediately. | c) The cars will move in the direction that the Ferrari was traveling (negative). | d) The cars will move in the direction that the Honda was traveling (positive). | |

Two cars collide head-on. If the Toyota’s momentum before the crash is 200 kg*m/s and the BMW’s momentum is -500 kg*m/s, which direction will the cars move after the crash? |
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a) The cars will move in opposite directions. | b) The cars will stop immediately. | c) The cars will move in the direction that the BMW was traveling (negative). | d) The cars will move in the direction that the Toyota was traveling (positive). | |

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