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# Momentum and Energy

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

The momentum of two objects in a collision is __________________. | conserved |

Momentum of a single object is the product of its _____________and velocity. | mass |

In an ____________________ collision between two objects, the objects stick together. | inelastic |

The law stating that the momentum of objects in a collision does not change. | The law of conservation of momentum. |

The change in momentum of an object. | Impulse |

Impulse is the product of __________________ and time. | force |

For a gjven impulse if you increase the contact time you __________________________ the force. | decrease |

For a given impulse if you decrease the contact time you _____________ the force. | increase |

_________________ energy varies as the square of the velocity. | kinetic |

Impulse is the change in _________________ of an object. | momentum |

An airbag ______________________ the contact time for the driver in a crash. | increases |

An airbag _________________ the force on the driver in a crash. | decreases |

______________ energy varies directly with the height of an object. | potential |

If you double the ________________of an object , the kinetic energy goes up by a factor of 4. | velocity |

mass X gravity X height | potential energy |

0.5 X mass X velocity squared | kinetic energy |

KE + PE | mechanical energy |

Objects bounce apart | elastic collision |

The fat brown cat | Basil |

The skinny black cat | Pepper |

Is schmurr a good rapper? | no |