Contact and non contact forces

• what is a force?

  a push or pull acting on an object due to an interaction with another object
• what are the two categories that all forces can be split into?

  • contact forces (objects touching)
  • non-contact (objects separated)
• give three examples of contact forces

  • friction
  • air resistance
  • tension
• give three examples of non-contact forces

  • gravitational forces
  • electrostatic forces
  • magnetic forces
• is force a vector or scalar quantity?

  • vector
  • it has both a magnitude and an associated direction