Equations Flashcards
Equations for average velocity?
Average velocity = displacement / time
Equation for acceleration?
Acceleration = change in velocity / time
Equation for momentum?
Momentum = mass x velocity
Equation for average speed?
average speed = total distance / total time
Equation for weight?
weight = mass x gravitational field strength
Equation for work done?
work done = force x distance along the line of the action of the force
Equation for force applied to a spring?
force applied to a spring = spring constant x extension
Equation for distance travelled?
distance travelled = speed x time
Equation for resultant force?
resultant force = mass x acceleration
Equation for kinetic energy?
Kinetic energy = 0.5 x mass x speed(squared)
Equation for gravitational potential energy?
gravitational potentional energy = mass x gravitational field strength x height
Equation for power?
power = work done / time
Equation for efficiency?
effiency = useful output energy transfer / total input energy transfer
Equation for wave speed?
wave speed = frequency x wavelength
Equation for charge flow?
charge flow = current x time
Equation for potential difference?
current x resistance
Equation for power?
power = potential difference x current
or
power = (current)2 x resistance
Equation for energy transfered?
energy transfered = power x time
or
energy transfered = charge flow x potential difference
Equation for density?
density = mass / volume
