Equations Flashcards
Weight
Weight= mass X gravitational field strength W= mXg
Work done
Work done= Force X distance
W= fXs
Force applied to a spring
Force applied to a spring= spring constant X extension
F= kXe
Distance travelled
Distance travelled= speed X time
S= vXt
Acceleration
Acceleration= change in velocity divided by time taken A= triangleV divided by t
Resultant force
Resultant force= mass X acceleration
F=mXa
Momentum
Momentum= mass X velocity
P=mXv
Kinetic energy
Kinetic energy= 0.5 X mass X speedsquared
Ek= 1/2XmXvsquared
Gravitational potential energy
Gravitational potential energy= mass X gravitational field strength X height
Ep= mXgXh
Power
Power= energy transferred divided by time P= E divided by T
Power
Power= work done divided by time P= W divided by T
Power
Power= potential difference X current P= vXi
Power
Power= currentsquared X resistance P= isquared X r
Efficiency
Efficiency= useful output energy transfer divided by total input energy transfer
Efficiency
Efficiency= useful power output divided by total power input
Wave speed
Wave speed= frequency X wavelength
V= fXupside down y
Charge flow
Charge flow= current X time
Q= iXt
Potential difference
Potential difference= current X resistance
V=iXr
Energy transferred
Energy transferred= power X time
E= pXt
Energy transferred
Energy transferred= charge flow X potential difference
E=qXv
Density
Density= mass divided by volume
p=m divided by v
