Sci Chapter 9: types of forces

• what are the contact forces?

  frictional force and elastic force
• what are the non-contact forces?

  magnetic force and gravitational force
• gravitational force is weight
• What is the formula for Weight?

  Weight = Mass x G
• Mass remains constant
• Mass is measured with electronic / beam balance
• What is the SI unit for Mass?

  kg
• What is the SI unit for Weight?

  N ( Newton )
• Weight changes depends on the location
• What is the meaning of Mass?

  Mass is the amount of matter in an object
• What is the meaning of Weight?

  Weight is the gravitational force acting on an object