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Physics equations 2
| Term | Definition |
|---|---|
| Weight (W) | Mass x gravitational field strength (m • g) |
| Work done (W) | Force x distance along the line of action of the force (F • s) |
| Force applies to a spring (F) | Spring constant x extension (k • e) |
| Moment of a force (M) | Force x distance normal to direction of force (F • d) |
| Pressure (p) | Force / area (F / A) |
| Distance (s) | Speed x time (v • t) |
| Acceleration (a) | Change in velocity / time taken (∆v / t) |
| Resultant force (F) | Mass x acceleration (m • a) |
| Momentum (P) | Mass x velocity (m • v) |
| Kinetic energy (E(k)) | 0.5 x mass x (speed)^2 (0.5m • v^2) |
| Gravitational potential energy (E(p)) | Mass x gravitational field strength x height (m • g • h) |
| Power (P) | Energy transferred OR work done / time (E / t OR W / t) |
| Efficiency (energy transfer) | Useful output energy transfer / total input energy transfer |
| Efficiency (power) | Total power output / total power input |
| Wave speed (v) | Frequency x wavelength ( f • n) |
| Charge flow (Q) | Current x time (I • t) |
| Potential difference (V) | Current x resistance (I • R) |
| Power (potential difference) (P) | Potential difference x current (V • I) |
| Power (resistance) (P) | (Current)^2 x resistance (I^2 • R) |
| Energy transferred (power) (E) | Power x time (P • t) |
| Energy transferred (potential difference) (E) | Charge flow x potential difference (Q • V) |
| Density (P) | Mass / volume (m / V) |
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