physics equation

• weight

  weight = mass × gravitational field strength W = m × g
• work done

  work done = force × distance (along the line of action of the force) W = F × s
• force

  force applied to a spring = spring constant × extension F = k × e
• distance

  distance travelled = speed × time s = v × t
• accerleration

  acceleration = change in velocity / time takena =∆v/ t or a = (v − u)/ t
• resultant force

  resultant force = mass × acceleration F = m × a
• momentum


  momentum = mass × velocity p = m × v
• KPE

  kinetic energy = 0.5 × mass × (velocity)KPE = 1/2 × m × v
• power

  power = energy transferred /timeP =E / tORpower= work done/ timep=W/t
• efficency (tranfered)

  efficiency = useful output energy transfer /total input energy transfer
• efficency (input/ output)

  efficiency = useful power output /total power input
• wave speed

  wave speed = frequency × wavelength v = f × λ
• charge flow

  charge flow = current × time Q = I × t
• potential differnece

  potential difference = current × resistance V = I × R
• power P3

  power = potential difference × current P = V × I
• power p3

  power = (current) 2 × resistance P = i 2 × R
• energy tranfered

  energy transferred = power × time E = P × t
• energy transfered

  energy transferred = charge flow × potential difference E = Q × V
• density

  density =mass/volumeρ =m/v