third

• What does Newton's third law state about two interacting objects?

  Forces they exert are equal and opposite
• What does the 'equal' in Newton's third law refer to?

  The magnitude of the two forces
• What does the 'opposite' in Newton's third law refer to?

  The direction of the two forces
• If you push a box with a force of 100 newtons, what force does the box exert on you?


  100 newtons
• What is the normal contact force?

  The force the box exerts back on you
• What determines which object moves when two objects interact?

  Mass and force applied to each object
• What happens if you push a small box?

  The box is likely to move
• What happens if you push a large box?

  The box may not move at all
• How does pushing off a wall relate to Newton's third law?

  You push the wall, and you move back
• What happens when you push a medium-sized box?

  You might move back a little, box moves forward
• What is Newton's second law equation?

  $F =$$m \cdot a$
• How can you rearrange Newton's second law to find acceleration?

  $a =$$\frac{F}{m}$
• What is required for an object to accelerate and move?

  High force or small mass
• Which object generally moves when two objects interact?

  The smaller object
• What are the key concepts of Newton's third law?

  • Forces are equal and opposite
  • Magnitude refers to the strength of forces
  • Direction refers to the way forces act
  • Normal contact force is the force exerted back
• How does mass affect movement in Newton's third law?

  • Smaller mass generally moves more
  • Larger mass may not move at all
  • Interaction depends on applied force
• What is the relationship between force, mass, and acceleration?

  • Newton's second law: $F =$$m \cdot a$
  • Rearranged: $a =$$\frac{F}{m}$
  • High force or small mass leads to acceleration