Equations

• Kinetic energy = 1/2 x Mass x Velocity^2
• Ek = 1/2 x m x v^2
• Kinetic energy is measured in Joules(J)
• Mass is measured in kilograms(kg)
• Velocity is measured in metres per second(m/s)
• Elastic potential energy = 1/2 x spring constant x extension^2
• Ee = 1/2 x k x e^2
• Elastic potential energy is measured in Joules(J)
• Spring constant is measured in newtons per metre (N/m)
• Extension is measured in metres(m)
• Gravitational Potential Energy = mass x gravitational field strength x height
• Ep = m x g x h
• Gravitational field strength is measured in newtons per kilograms (N/kg)
• Gravitational potential energy is measured in Joules (J)
• Height is measured in metres (m)
• Delta E = m x c delta theta
• Change in thermal energy = mass x specific heat capacity x temperature change
• Change in thermal energy is measured in Joules (J)
• Specific heat capacity is measured in joules per kilogram per degree Celsius (J/kg degrees Celsius)
• Temperature change is measured in degrees Celsius
• P =E/t
• Power = Energy/time
• Power is measured in Watts(W)
• Time is measured in seconds (s)
• efficiency = useful output energy/total input energy transfer