physics equations Flashcards
equation that links weight mass and gravitational field strength
W = m x g
weight = mass x gravitational field strength
equation that links acceleration change in velocity and time taken
a= (change) v/t
acceleration = change in velocity/time taken
equation that links momentum mass and velocity
Ep = m x g x h
gravitational potential energy = mass x gravitational field strength x height
equation that links power work done and time
P = W/t
power = work done/time
equation that links efficiency useful power output and useful power input
efficiency = useful power output/total power input
equation that links charge flow current and time
Q = I x t
charge flow = current x time
equation that links power potential difference and current
P = V x I
power = potential difference x current
equation that links energy transferred and power and time
E = P x t
energy transferred = power x time
equation that links density mass and volume
P = m/V
density = mass/volume
equation that links work done force and distance
W = Fs
work done = force x distance
equation that links distance travelled speed and time
s = v x t
distance travelled = speed x time
equation that links resultant force mass and acceleration
F = m x a
resultant force = mass x acceleration
equation that links kinetic energy mass and speed
Ek = 1/2 x m x v^2
kinetic energy = 0.5 x mass x (speed)^2
equation that links power energy transferred and time
P = E/t
power = energy transferred/time
equation that links efficiency useful output energy transfer and total input energy transfer
efficiency = useful output energy transfer/total input energy transfer
