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# Physical Science

### Physical science for VAS students

Term | Definition |
---|---|

Speed (s) | Units: m/s, km/h Formula: s = d/t |

Velocity (v) | Units: m/s, km/h - always includes a direction Formula: v = d/t |

Distance (d) | Units: m, km Formula: --- |

Displacement (Δx) | Units: m, km Formula: --- |

Mass (m) | Units: kg Formula: --- |

Acceleration (a) | Units: m/s/s - (m/s²) Formula: Δv/t |

Acceleration due to gravity (g) | 9.81 m/s² |

Force (f) | Units: N Formula: --- |

Weight (fg) | Units: N or lb Formula: fg = mg |

Time (t) | Units: s Formula: --- |

Temperature (t) | Units: K or °C Formula: --- |

Momentum (p) | Units: kg(m/s) Formula: p = mv |

Kinetic energy (KE) | Units: J Formula: 0.5 · m · v² |

Gravitational Potential Energy (GPE) | Units: J Formula: mgh |

Thermal energy (Q) | Units: Formula: m · c · Δtemperature |

Work (w) | Units: J Formula: fd |

Power (p) | Units: J/s - which is watts. Formula: P = w/t OR e/t |

Ideal mechanical advantage (IMA) | Units: --- Formula: Di / Do |

Actual mechanical advantage (AMA) | Units: --- Formula: Fo / Fi |

Efficiency (e) | Units: % Formula: (Wo / Wi) · 100 |

Friction (f) | Units: N Formula: --- |

Coefficient of friction (μ) | Units: --- Formula: μ = F / fg |

Specific heat (c OR cp) | Units: J / (kg · °C) Formula: C = Q/(m · ΔT) |

Voltage (v) | Units: Volts Formula: V = IR |

Current (I) | Units: Amperes Formula: I = V / R |

Resistance (R) | Units: Ω (ohms) Formula: R = V /I |

Electric power (P) | Units: W Formula: P = IV |

Electric energy (E) | Units: J Formula: PT |

Electricity Cost (---) | Units: KWH Formula: E · price of energy |

Ohms law | V = IR |

Created by:
kangn8r