Laws of Motion

• What is Newton's first law of motion also known as?

  Inertia
• What does Newton's first law state about an object at rest?

  It stays at rest unless acted upon
• What happens to an object in motion according to Newton's first law?

  It continues moving at constant speed unless stopped
• If a football is on the ground, what must happen for it to move?

  It must be kicked
• How does a car's motion illustrate Newton's first law?

  A car keeps moving until brakes are applied
• What is inertia?

  • An object's tendency to resist changes in motion
  • Example: A stationary book remains still unless moved
• What does Newton's second law explain?

  The relationship between force, mass, and acceleration
• What is the formula for Newton's second law?

  $F =$$ma$
• What does the variable *F* represent in the formula $F =$$ma$?


  Force applied to an object
• What does the variable *m* represent in the formula $F =$$ma$?


  Mass of the object
• What does the variable *a* represent in the formula $F =$$ma$?


  Acceleration of the object
• What happens when you push a light shopping cart with a force of 10 N?

  It accelerates quickly
• How does pushing a heavy shopping cart with the same force compare to a light one?

  It accelerates more slowly
• What happens when you kick a football with a force of 20 N?

  It moves much faster
• What are the key concepts of Newton's second law?

  • Force: A push or pull causing acceleration
  • Mass: Amount of matter in an object
  • Acceleration: Rate of change of velocity
• What does Newton's third law state?

  For every action, there is an equal reaction
• What happens when one object applies a force on another?

  The second object applies an equal force back
• How does walking illustrate Newton's third law?

  You push the ground, it pushes back
• What occurs during a rocket launch according to Newton's third law?

  Gases eject down, rocket moves up
• What are the key concepts of Newton's third law?

  • Action force: Force applied by one object
  • Reaction force: Equal and opposite force exerted back
• What are the key terms related to Newton's laws of motion?

  • Inertia
  • External force
  • State of motion
  • Action
  • Reaction
  • Equal and opposite