A | B |

Impulse | Equal to the change in momentum of an object. Can be calculated by multiplying the average force acting by the time taken |

Centre of Mass | The point where the total mass of an object (or objects) appears to act |

Velocity of Centre of Mass | Can be calculated by dividing the total momentum by the total mass |

Angular Displacement | The angle turned through by an object as it rotates |

Angular Velocity | The rate of change of angular dispalcement (The angle turned through every second) by a rotating object |

Angular Acceleration | The rate of change of angular velocity (The change in angular velocity every second) |

Rotational Inertia | A measure of how hard it is to start or stop an object rotating (Depends on mass and mass distribution) |

Rotational Kinetic Energy | Energy possessed by a rotating object |

Angular Momentum | The product of rotational inertia times angular velocity |

Torque | The turning effect of a force |

Natural Frequency | The frequency of SHM if the system is allowed to oscillate freely |

Resistivity | A quantity which compares the resistance of different materials |

Magnetic Flux | Magnetic field strength (in Telsa) through each square metre |

Capacitance | Charge stored (in Coulombs) on the plates of a capacitor per volt across the plates |

Inductance | The voltage induced across an inductor as the current changes by 1 amp per second |

Reactance | The ability of a capacitor or inductor to limit the size of the current in an AC circuit |

Impedance | The combined effect of resistance and reactance to limit the current in an AC circuit |

Velocity | Speed in a given direction |

Acceleration | The rate at which an object changes its velocity |

Acceleration caused by gravity | The rate at which object s change their velocity when acted on by gravity |

Force | A push or pull in a particular direction |

Centripetal Force | A force that turns an object (It is directed towards the centre of the circle or curve) |

Spring Constant | The force required to extend (or compress) a springby 1m |

Linear Momentum | The product of mass times velocity |

Energy | The capacity to do work |

Frequency | The number of cycles per second |

Period | Time taken for one complete cycle |

Amplitude | Distance from equilibrium position to the maximum point (half the maximum displacement) |

Wavelength | Distance in a wave from one point to the next repetition of that point |

Current | Charge flowing (in Coulombs) per second |

Voltage | Energy difference per coulomb of charge between two points |

EMF | Voltage of a battery when no current is flowing |

Resistance | A measure of how well a material conducts electricity |

Internal Resistance | Resistance of a power source |

Magnetic Field Strength | The size of the magnetic force acting in an area |

Work | Energy transferred |

Power | Energy transferred per second |

Refractive Index | A comparison of the speed of light in different mediums (large refractive idex = slow speed) |

Work Function | Minimum energy needed by an electron to escape the surface of a particular metal |