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# Momentum & Impulse

### Momentum & Impulse - A Level Physics Quiz

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

What is the symbol for momentum? | p |

Define momentum | = mass x velocity |

Define change in momentum | = final momentum - intial momentum |

Newton's 2nd law (in terms of acceleration) | RESULTANT force acting on an object is proportional to its acceleration; the acceleration takes place in the DIRECTION of the resultant force |

Newton's 2nd law (in terms of momentum) | the rate of change of momentum of an object is proportional to the RESULTANT force acting on it; the change in momentum takes place in the DIRECTION of the resultant force |

If F is proportional to ma, what is F equal to? | F = k ma |

What is the value of k in F = k ma | 1 |

how do we define the newton so that k = 1 in F = k ma? | 1 newton is the force that provides a mass of 1 kilogram with an acceleration of 1 metre per second squared |

Is momentum a scalar or a vector? | vector |

What is the unit of momentum? | kilogram metre per second |

Define Newton's 2nd law in terms of acceleration | force = mass x acceleration |

Define Newton's 2nd law in terms of rate of change of momentum | force = mass x rate of change of momentum |

Give a symbol formula for impulse with 'Ft' as the subject of the equation | Ft = m(v-u) or Ft = mv - mu |

What is the 'preferred' unit of impulse? | Ns |