Equations GK

• Kinetic energy = 0.5 × mass × (speed)²

  Ek=½mv²
• Elastic potential energy = 0.5 × spring constant × (extension)²

  Ee=½ke²
• Gravitational potential energy = mass × gravitational field strength × height

  Ep=mgh
• Change in thermal energy = mass × specific heat capacity × temperature change

  ◇E=mc◇0
• 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