Equations

• Weight = mass(kg) x gravitational field strength(N/kg)
• gravitational potential energy = mass x gravitational field strength x height
• weight is measured in Newtons
• Ep = mgh
• 1000g =1 kg
• gravitational field strength on earth is 9.8(N/kg)
• Kinetic energy = 1/2 x mass x velocity^2 (speed )
• density = mass/volume