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# Force and Motion

### A review of our Force and Motion Unit

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

What is Newton's First Law of Motion? | An object in motion will stay in motion until it is acted upon by an unbalanced force. |

What is Newton's Second Law of Motion? | Force = mass x acceleration |

What is Newton's Third Law of Motion? | For every action there is an equal and opposite reaction. |

What is the symbol for Force? | F |

What is the symbol for Acceleration? | a |

What is the symbol for Momentum? | p |

What is the symbol for Velocity? | V |

What is the symbol for Mass? | m |

What is the symbol for Distance? | d |

What is the symbol for Time? | t |

What is the SI unit for Force? | kgm/sec2 or Newton (N) |

What is the SI unit for Momentum? | kgm/sec |

What is the SI unit for Acceleration? | m/sec2 |

What is the SI unit for Time? | sec |

What is the SI unit for Mass? | kg |

What is the SI unit for Distance? | m |

What is the SI unit for Velocity? | m/sec |

What is a force? | Anything that pushes or pulls |

What is motion? | Movement between two locations |

What is speed? | How fast an object travels between two locations |

What is a vector? | A magnitude and direction |

What is a scalor? | A magnitude |

What is velocity? | How fast an object travels between two locations and in what direction |

What is momentum? | How hard it is to stop a moving object |

What is acceleration? | A slowing down, speeding up or change in direction |

What is a balanced force? | The net force is zero due to equal and opposite forces canceling out or a constant velocity |

What is an unbalanced force? | A force that is not cancelled out and produces acceleration |

What is gravity? | An attraction between two objects |

What is inertia? | An object in motion does not want to stop (or an object at rest does not want to move) |

Who is Isaac Newton? | The person who discovered gravity and described the Laws of Motion |

On a position and time graph, what does a positive slope mean? | The object is moving in a positive direction |

On a position and time graph, what does a negative slope mean? | The object is moving in a negative direction |

On a position and time graph, what does a slope of zero mean? | The object is not moving |

On a velocity and time graph, what does a positive slope mean? | The object is going fast (positive acceleration) |

On a velocity and time graph, what does a negative slope mean? | The object is sloing down (negative acceleration) |

On a velocity and time graph, what does a slope of zero mean? | The object is moving with a constant velocity (acceleartion is zero) |

On a position and time graph, which is the independent variable (X axis)? | Time |

On a velocity and time graph, which is the dependent variable (Y axis)? | Velocity |

What is an example of Newton's first law? | A baseball in space will not stop until it hits another object. |

What is an example of Newton's second law? | A train is harder to stop than a small car because it has more mass. |

What is an example of Newton's third law? | A bowling ball knocks over the pins. |

What is the equation for force? | F = m x a |

What is the equation for velocity? | V = d/t |

What is the equation for acceleration? | a = v/t |

What is the equation for momentum? | p = m x V |