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Physics gcse
| Question | Answer |
|---|---|
| Speed m/s | Distance m ————— Time s |
| Acceleration m/s^2 | Change in velocity m/s —————————— Time s |
| Force N | Mass kg X acceleration m/s^2 |
| Weight N | Mass kg X gravitational field strength N/kg |
| Momentum kgm/s | Mass kg X velocity m/s |
| Change in gravitational potential energy J | Mass kg X gravitational field strength N/kg X height m |
| Kinetic energy J | 1/2 X mass kg X velocity^2 (m/s)^2 |
| Efficiency | Useful energy J ——————— (X100 for %) Total energy J |
| Wave speed m/s | Frequency Hz X wavelength m OR Distance m ————— Time s |
| Power W | Work done J Energy transferred —————— OR ————————— Time Time |
| Moment of a force Nm | Force N X distance normal to the direction of the force m |
| Energy transferred J | Charge moved c X potential difference v |
| Charge c | Current A X time s |
| Potential difference v | Current A X resistance ohmes |
| Electrical power w | Current A X potential difference v OR Current^2 A^2 X resistance ohmes |
| Density kg/m^3 | Mass kg ———— Volume m^3 |
| Force exerted on a spring N | Spring constant N/m X extension m |
| Pressure Pa | Force normal to surfacr N ———————————— Area of surface m^2 |
Created by:
Smitb
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