GPE & KE

• GPE stands for…. Gravitational Potential Energy

  • When an object changes height it gains or loses gravitational potential gravity energy. the higher an object is the more gravitational potential energy it has.
• The formula for GPE :

  GPE = mass * gravitational field strength * height

  • GPE is measured in Joules(J)
  • Mass is measured in Kilograms (kg)
  • Gravitational field strength is measured in ( N/kg), newtons per kilogram
  • Height is measured in metres (m)
• When calculating GPE something to remember is that Gravity will always be 10 because that is the gravity in earth.
• KE stands for… Kinetic Energy

  • The faster an object is travelling the more kinetic energy it has. Kinetic energy can be calculated using an equation.
  • An object with a larger mass will have more kinetic energy than a smaller object moving at the same velocity.
• Equation for Kinetic Energy:

  KE = 0.5 * mass * velocity squared

  • Kinetic Energy is measured in Joules (J)
  • Mass is measured in Kilograms (kg)
  • Velocity is measured in metres per second (m/s)
  • And you then have per second squared