contact and non contact forces

• what is a force

  push or pull that acts on object due to interaction with another object
• what is a contact force

  objects that are physically touching
• what are non contact forces

  objects are physically seperated
• examples of contact forces

  friction

  air resistance

  tension

  normal contact force
• examples of non contact forces

  gravitational

  electrostatic

  magnetic
• is a force vector or scalar quantity


  vector
• what can forces do to an object

  change shape

  change motion

  change state of rest
• unit of force

  newton
• when 2 objects interact what force is exerted

  equal and opposite