Measure | Name | Symbol | Definition |
---|---|---|---|

length | metre | m | |

mass | kilogram | kg | The mass of 10cm^{3} of water. |

time | second | s |

Measure | Name | Symbol | Definition |
---|---|---|---|

speed | metres per second | m/s | How many metres an object travels every second. |

acceleration | metres per second squared | m/s^{2} |
How many m/s an object accelerates per second, or m/s/s. |

force | newton | N | How much force a one kilogram object needs to accelerate from 0 to 1 m/s in one second; kg×m/s^{2} |

impulse | newton second | N×s or kg×m/s | How much momentum an object has. |

energy | joule | J | A newton applied until any object has moved 1 metre is to give it a joule of energy; kg×m^{2}/s^{2}. |

These are all the variables when, in a completely empty vacuum, an object is pushed from zero velocity for a certain amount of time with a constant force.

*
Note: variables in ***bold*** or italic bold are vectors.
*

Name | Symbol | Measure | Unit | Definition |
---|---|---|---|---|

force | F |
force | N | The constant amount of force applied to an object during the time when it is pushed. |

mass | m | mass | kg | The mass of the object being pushed. |

time | t | time | s | The time during which the object is being pushed. |

acceleration | a |
acceleration | m/s^{2} |
How much that object is accelerating at any given time while being pushed. |

initial velocity | u |
velocity | m/s | The beginning velocity of the object. |

final velocity | v |
velocity | m/s | The final speed and direction of the object after being pushed. |

displacement | s |
length | m | The distance and direction the object has moved once the push has finished (however, the object will continue moving linearly). |

kinetic energy | KE | energy | J | The amount of energy an object contains. |

work | W | energy | J | How much energy is required to push the object (in our case seeing as there are no other factors, the same as KE). |

momentum | p |
impulse | kg×m/s | The speed an object has relative to its mass; with two objects of different mass and same velocity, the lighter one will have lower momentum. The total amount of momentum in the universe never changes. |

**F** = m**a**

** v** =

** s** =

KE = ½m*v*^{2}

W = **F***s*

**p** = m*v*