1.2.1 Newton's Laws of Motion

• Newton's Second Law is represented by the equation F=ma
• The greater the mass of an object, the more force is needed to achieve the same acceleration
• Arrange the terms of Newton's Second Law in the correct order of their descriptions and units:

  1️⃣ F: Force in Newtons

  2️⃣ m: Mass in kilograms

  3️⃣ a: Acceleration in m/s²
• An action force acts on the other object
• Newton's Third Law states that for every action, there is an equal and opposite reaction.reaction
• What does the reaction force act on in Newton's Third Law?

  The original object
• When you push against a wall, the wall exerts an equal and opposite force back on you.


  True
• Steps involved in how airbags function during a collision

  1️⃣ Car stops suddenly

  2️⃣ Airbags inflate rapidly

  3️⃣ Impact is cushioned

  4️⃣ Motion is prevented
• When pushing a car with a force of 500 N and a mass of 1000 kg, the resulting acceleration is 0.5 m/s².
• What is another name for Newton's First Law?

  Law of inertia
• An object at rest will remain at rest unless acted upon by an unbalanced force.


  True
• When you push against a wall, the wall pushes back with an equal force in the opposite direction
• What are the two types of forces involved in Newton's Third Law?

  Action and reaction
• The direction of the reaction force is always away from the other object.
• Seatbelts keep you in place during a collision by preventing you from continuing in motion.
• What is the equation for Newton's Second Law?

  $F =$$ma$
• Action-reaction force pairs in Newton's Third Law act on different objects.

  True
• What does Newton's Third Law state?

  Action-reaction
• Match the term with its description and units:

  F ↔️ Force in Newtons

  m ↔️ Mass in kilograms

  a ↔️ Acceleration in m/s²
• The unit of force is Newtons.


  True
• Give an example of Newton's Third Law in everyday life.

  Pushing against a wall
• Newton's Third Law states that action and reaction forces act on the same object.

  False
• What is the relationship between inertia and Newton's First Law?

  Inertia explains Newton's First Law
• Objects on a slippery floor demonstrate inertia by continuing to move unless acted upon by a force.


  True
• Match the action force with its corresponding reaction force:

  A person kicks a ball ↔️ The ball exerts a force on the foot

  A rocket engine expels gases ↔️ The gases exert a force on the rocket

  A book rests on a table ↔️ The table supports the weight of the book

  A person pushes against a wall ↔️ The wall pushes back on the person