Formula Need To Learn Flashcards
Kinetic energy
1/2 x mass x speed2
Ek=1/2 x m x v2
Gravitational potential energy
GPE=mass x gravitational field strength x height
Ep=mgh
Power
Power=work done/time taken
P=W/T
Efficiency
Efficiency= useful energy output/total energy output
Useful power output/total power output
Density
Mass/volume
P=m/v
Weight
Weight= mass x gravitational field strength
W=mg
Work done
Force x distance
W=Fs
Force
Spring constant x extension
F=ke
Moment of a force
Force x distance
Pressure
Force normal to surface/ area of surface
P=F/A
Distnace travlled
Speed x time
Acceleration
Change in velocity/ time taken
Final velocity-initial velocity/time taken
Resultant force
Mass x acceleration
Momentum
Mass x velocity
Wave speed
Frequency x wavelength