BMAT: Physics Equations

Q = charge, V = potential difference, P = power, I = current, R = Resistance, E = Energy, s = distance, v = velocity, t = time, u = initial velocity, a = acceleration, m = mass

Electricity and Circuits:

Q= I x t (Charge = Current x Time)

V= I x R (Potential Difference = Current x Resistance)

P = V x I (Power = potential difference x current)

P = I^2 x R (Power = current squared x resistance)

E = Q x V (Energy = charge x potential difference)

Motion:

s = v x t (Distance = speed x time)

a = (delta) v / t (acceleration = change in velocity / time)

avg speed = (v+u) / t (the average speed = final speed + initial speed / time)

v = u+at (final velocity = initial velocity + acceleration x time)

v^2 = u^2 + 2as

s = ut + 0.5at^2

s = (v+u)/2 x t

Energy:

P = F/A (pressure = force / area)

D = m/V (density = mass/volume)

Wave speed = frequency x length

KE = 0.5mv^2 (Kinetic energy = 0.5 x mass x velocity squared)

Wd = F x distance moved (Work done = force x the distance moved)

E = Wd / t (energy transferred = work done / timee)