2.3 Newton's Laws of Motion

• What is inertia defined as?

  Resistance to change in motion
• What does Newton's First Law state about an object's motion?

  Constant velocity unless acted upon
• Newton's First Law describes how objects behave in the absence of a net external force
• The greater the force acting on an object, the greater its acceleration.


  True
• The greater the mass of an object, the greater its inertia.


  True
• An object will continue moving with constant velocity unless acted upon by an external force.


  True
• What does Newton's Second Law state mathematically?

  $F =$$ma$
• Newton's First Law is also known as the Law of Inertia
• The formula for Newton's Second Law is $F =$$ma$


  True
• Newton's First Law of Motion is also known as the Law of Inertia
• Inertia is an intrinsic property of an object that determines how much force is required to change its state of motion
• What is the relationship between mass and inertia?

  The greater the mass, the greater the inertia
• Match the variables in Newton's Second Law with their units:

  Force ↔️ Newtons (N)

  Mass ↔️ Kilograms (kg)

  Acceleration ↔️ m/s^2
• Inertia is the tendency of an object to resist changes in its state of motion
• The more massive an object, the greater its inertia.


  True
• Match the property with its relationship in Newton's Second Law:

  Force ↔️ Directly proportional to acceleration

  Mass ↔️ Inversely proportional to acceleration

  Acceleration ↔️ Directly proportional to force
• A ball rolling on a frictionless surface will stop moving unless a force acts on it.

  False
• What is another name for Newton's First Law?

  Law of Inertia
• What property of an object is directly related to its inertia?

  Mass
• What law defines the relationship between force, mass, and acceleration?

  Newton's Second Law
• What does Newton's Third Law state?

  For every action, there is an equal and opposite reaction
• What happens to a car moving at constant speed on a highway if no external forces act on it?

  Continues at the same speed
• Newton's Second Law states that force equals mass multiplied by acceleration
• Newton's First Law states that an object will remain at rest unless acted upon by a net external force.


  True
• Inertia is the tendency of an object to resist changes in its state of motion
• Newton's First Law states that an object will remain at rest or continue to move with constant velocity
• The mathematical expression for Newton's Second Law is $F =$$ma$
• Arrange the properties based on their relationship to acceleration in Newton's Second Law.

  1️⃣ Force (F) is directly proportional to acceleration (a)

  2️⃣ Mass (m) is inversely proportional to acceleration (a)
• Action and reaction forces always act on the same object.

  False
• The greater the mass of an object, the greater its inertia
• Objects with high inertia are easier to start moving.

  False
• A hockey puck sliding on ice slows down due to friction, demonstrating Newton's First Law.

  True
• The unit for force in Newton's Second Law is kilograms.

  False
• A greater force applied to an object results in greater acceleration
• Match the examples with the correct action-reaction forces.

  Pushing against a wall ↔️ Wall pushes back

  Rocket launching ↔️ Exhaust gases push rocket

  Book on a table ↔️ Table pushes upward