Equations Flashcards
Mass =
Weight / GFS
Force / acceleration
Momentum / velocity
Kinetic energy / (0.5 x speed squared)
GPE / (GFS x height)
Density x volume
Weight =
Mass x GFS
GFS =
Weight / mass
GPE / (mass x height)
Work done =
Force x distance
Power x time
Force =
Work done / distance
Mass x acceleration
Distance =
Work done / force
Speed x time
Speed =
Distance / time
Square root of [KE / (0.5 x mass)]
Time =
Distance / speed
Change in velocity / acceleration
Energy transferred / power
Work done / power
Charge flow / current
Momentum =
Mass x velocity
KE =
0.5 x mass x speed squared
Velocity =
Momentum / mass
GPE =
Mass x GFS x height
Height =
GPE / (mass x GFS)
Power =
Energy transferred / time
Work done / time
PD x current
Current squared x resistance
Energy transferred =
Power x time
Charge flow x potential difference
Efficiency =
Useful output energy transfer / total input energy transfer
Useful power output / total power output
Useful power output =
Efficiency x total power output
Total power output =
Useful energy output / efficiency
Wave speed =
Frequency x wavelength
Frequency =
Wave speed / wavelength
Wave length =
Wave speed / frequency
Charge =
Current x time
Energy transferred/ PD
Current =
Charge / time
PD / resistance
Power / PD
Square root of (power / resistance)
PD =
Current x resistance
Energy transferred/ charge
Power / current
Resistance =
PD / current
Power / current squared
Density =
Mass / volume
Useful output energy transfer =
Efficiency x total input energy transfer
Total input energy =
Useful output energy transfer / efficiency
Acceleration =
Change in velocity/ time taken
Force / mass
Change in velocity =
Acceleration x time taken
Volume =
Mass / density
