Motion and Force

• Force can change the movement of an object
• Fundamental Forces in Nature

  • Strong Nuclear Force
  • Electromagnetic Force
  • Weak Nuclear Force
  • Gravitational Force
• Strong Nuclear force


  Force that holds together the protons and neutrons in the nucleus of an atom
• Electromagnetic Force


  Binds electrons to the atomic nucleus, atoms into molecules, ions in solid matter, and molecules in liquid and solid
• Adhesion


  Force of attraction between different kinds of molecules
• Cohesion


  Force of attraction between the same kinds of molecules
• Weak Nuclear Force


  Stronger than gravitational force but weaker than either electromagnetic or strong nuclear force
• Gravitational Force


  Force of attraction between two objects that causes objects to fall towards the earth