Newton’s third law

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

  They 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 in the opposite direction.
• What is the normal contact force?

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

  The mass of the objects and the force applied.
• 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.
• What is a real-life example of Newton's third law when pushing off a wall?

  You push the wall, but you move back.
• How does the size of an object affect its movement when a force is applied?

  Smaller objects tend to move more easily.
• What is the equation for Newton's second law?

  $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 be accelerated?

  A high force or a small mass.
• Why does a smaller object generally move more easily?

  It has a smaller mass compared to the force.
• What are the key concepts of Newton's third law?

  • Forces between two objects are equal and opposite.
  • Magnitude refers to the strength of forces.
  • Direction refers to the way forces act.
  • Example: Pushing a box results in equal force back.
• How does mass affect movement in Newton's third law?

  • Smaller mass: more likely to move.
  • Larger mass: less likely to move.
  • Interaction depends on applied force and mass.
• What is the relationship between force, mass, and acceleration?

  • Newton's second law: $F =$$m \cdot a$
  • Rearranged: $a =$$\frac{F}{m}$
  • Acceleration increases with higher force or lower mass.