Physics equations sheet weight = mass × gravitational field strength W=mg work done = force × distance W=Fs force applied to a spring = spring constant × extension F=ke distance travelled = speed × time s=vt acceleration = change in velocity time taken a=Δv t resultant force = mass × acceleration F=ma momentum = mass × velocity p=mv Ek = 1 m v2 2 kinetic energy = 0.5 × mass × speed 2 gravitational = mass × gravitational field strength (g) × height potential energy Ep = m g h power = energy transferred time P=E T power = work done time P=W t efficiency = useful output energy transfer total input energy transfer efficiency = useful power output total power input wave speed = frequency × wavelength v=fλ charge flow = current × time Q=It potential difference = current × resistance V=IR power = potential difference × current P=VI power = current 2 × resistance P = I2 R energy transferred = power × time E=Pt energy transferred = charge flow × potential difference E=QV density = mass volume © www.teachitscience.co.uk 2017 ρ=m V 28873 Page 1 of 2 Physics equations sheet weight = .................. × gravitational field strength ........... = F s work done = force × .................. force applied to a spring = ............................. × extension distance travelled = ................... . × time F = k ............ ........... = v t a=Δv t acceleration = change in velocity ........................ F=ma resultant force = mass × ....................... p = ........... v momentum = mass × velocity kinetic energy = ................ × mass × speed 2 gravitational potential energy W = m ........... = mass × gravitational field strength (g) × .......... Ek = 1 m v2 2 Ep = m g h P=E T power = ............ transferred time P=W t .............. = work done time efficiency = useful output energy transfer ................................... ............... = useful power output total power input wave speed = .................... × wavelength Q=It charge flow = current ................ time potential difference = current × .......................... power = potential difference × ........................... power = current 2 × ......................................... energy transferred = ........................ × time energy transferred = charge flow × ...................... V = I ............ ............ = V I P = ......... R E = P ......... E=QV ρ=m .......... ............... = mass volume © www.teachitscience.co.uk 2017 v = f ............ 28873 Page 2 of 2