GCSE equations Flashcards
what is the unit of acceleration?
m/s[2]
Acceleration equation
change in speed/time taken or (v-u)/time taken
what is the equation for working out weight?
mass x 9.81 (gfs)
Equation to work out force
mass x acceleration
equation to work out efficiency
useful energy used/total input
equation to work out momentum(2)
mass x velocity
equation to work out wave speed
distance/time
Or
Wavelength x frequency
equation to work out density
mass/volume
equation to work out work done
force x distance moved in direction of force
equation to work out change in gravitational potential energy (AGPE) ^
mass x gravitational field strength x change in vertical height
equation to work out kinetic energy
1/2 x mass x (speed squared)
equation to work out power
- work done/time take
- energy transferred/time taken
energy transferred equation
charge moved x potential difference
charge equation
current x time
potential difference equation
current x resistance
electrical power
current x voltage
or current squared x resistance
force exerted on a spring equation
= spring constant x extension
Equation to work out moment of a force
Force x distance perpendicular to the direction of force
Equation to work pressure
Force normal to surface/area of that surface
Resistance
R = v x I
Ravioli
Voltage x current
