Appendix 4: Formulae and Relationships

Appendix 4: Formulae and Relationships ​

  1. Speed = distance / time taken
  2. Velocity = displacement / time taken
  3. Average velocity = (initial velocity + final velocity) / 2
  4. Weight = mass * gravitational field strength
  5. Momentum = mass * velocity
  6. Force = (mv - mu) / t
  7. increase in momentum = force * time
  8. Moment = Force * distance
  9. Sum of clockwise moments = sum of anticlockwise moments
  10. Power = Current * Voltage
  11. Energy = power * time
  12. Voltage = current * resistance
  13. Charge = current * time
  14. frequency= 1 / Time period
  15. Speed=frequency * wavelength
  16. refractive index = sin i / sin r
  17. sin c = 1 / n
  18. efficiency = (useful energy output from the system / total energy input to the system) * 100%
  19. work done = force * distance
  20. Gravitational potential energy = mass * gravitational field strength * height
  21. Kinetic energy = ½ mv2
  22. Power = Work done / time taken
  23. Density= mass / Volume
  24. Pressure= Force / Area
  25. Pressure difference = height × pressure × gravitational field strength
  26. P1 * V1 = P2 * V2
  27. Temperature in K = temperature in oC +273
  28. P / T = P2 / T2
  29. Vp / Vs = np / ns
  30. Power input = Power out
  31. Voltage in primary current * Current in primary current = Voltage in secondary current * Current in secondary current
  32. Orbital Speed = 2Пr / T
  33. S = ut + 1/2 * at 2