Newtons 3rd law

• What does Newton's third law state about the forces two objects exert on each other?


  The forces are equal and opposite.
• What does the "equal" part of Newton's third law refer to?

  It refers to the magnitude of the two forces.
• What does the "opposite" part of Newton's third law refer to?


  It refers to the direction of the forces.
• If you push a box with a force of 100 newtons, what force does the box exert on you?

  100 newtons in the opposite direction.
• When pushing against a wall, the wall pushes back with an equal and opposite force. The force is called:

  
  

  Normal contact force.
• What determines whether you or the box will move when you push it?

  The mass of the box and the force applied.
• If the box is small, what is likely to happen when you push it?

  The box will move because it has a much lower mass.
• What happens if the box is very large when you push it?

  The box may not move at all, and you might be pushed backwards.
• How is pushing off a wall similar to pushing a box?


  In both cases, the object you push can cause you to move.
• What happens if the box is medium-sized when you push it?

  You might get pushed backwards a little, and the box might still go forwards a bit.
• What is the equation related to Newton's second law?

  F = ma.
• How can you rearrange the equation F = ma to find acceleration?


  Acceleration a = F/m.
• What is required for an object to be accelerated and move?


  You need either a high force or a small mass.
• Why does the smaller object generally move more when pushed?

  Because it has a smaller mass.
• What are the key concepts of Newton's third law?

  • Forces between two objects are equal and opposite.
  • Magnitude refers to the strength of the forces.
  • Direction refers to the way the forces act.
  • Example: Pushing a box results in equal force exerted back.
• What factors influence which object moves when two objects interact?

  • Mass of the objects
  • Magnitude of the applied force
  • Example: Smaller mass moves more easily.
• How does Newton's second law relate to motion?

  • Equation: F = ma
  • Rearranged: a = F/m
  • High force or small mass leads to acceleration.