Gravity, weight, Gpe

• What are the units of mass?

  Kilograms
• The weight of an object is determined by both the strength of the grav field acting upon it, and objects mass.

  True of false?

  True
• What is the formula for weight?

  Weight = mass x grav field strength
• What are the units for weight?

  Newtons (N)
• 2 factors which determine the strength of the grav force of attraction?

  Mass of objects

  Distance between objects
• Units of grav potential energy?

  Joules (J)
• Grav field strength on the earths surface..

  9.8 N/Kg
• What is the formula for grav potential energy?

  Ep = mgh
• Is weight or mass a force?

  Weight