2.5 Newton’s Second Law

• The inertia of an object is directly proportional to its mass
• What does Newton's Second Law state?

  F = ma
• What is the acceleration of a 2 kg object when a 10 N force is applied?

  5 m/s²
• Force is a vector quantity, meaning it has both magnitude and direction.
• Force can only cause acceleration; it cannot cause deformation.

  False
• What is the standard unit for measuring mass?

  kilogram
• The formula to calculate acceleration is a = Δv / Δt
• Acceleration is a vector quantity that includes both magnitude and direction
• The unit of acceleration is meters per second squared (m/s²).


  True
• The inertia of an object is directly proportional to its mass.


  True
• Newton's Second Law states that net force equals mass times acceleration
• Force is a vector quantity measured in Newtons
• The unit of force is Newtons (N).


  True
• What does mass measure in an object?

  Resistance to acceleration
• The formula to calculate acceleration is a = Δv / Δt
• Steps to solve problems using Newton's Second Law

  1️⃣ Identify all forces

  2️⃣ Calculate the net force

  3️⃣ Determine the mass of the object

  4️⃣ Use the formula F = ma to find acceleration

  5️⃣ Apply the calculated acceleration to kinematic equations
• What is inertia in physics?

  Resistance to motion change
• A bowling ball has lower inertia than a golf ball.

  False
• Force in Newton's Second Law is measured in Newtons
• Greater mass implies greater inertia.


  True
• What is the standard unit for measuring force?

  Newton
• Mass is a scalar quantity that measures the amount of matter in an object.
• What is acceleration in physics?

  Rate of change of velocity
• What is the acceleration if a car increases its velocity from 20 m/s to 30 m/s in 5 seconds?

  2 m/s²
• What is the formula to calculate acceleration?

  a = Δv / Δt
• Inertia is an object's inherent resistance to changes in its state of motion
• Match the mass of an object with its inertia:

  Low mass ↔️ Weak inertia

  High mass ↔️ Strong inertia
• What is the formula for Newton's Second Law?

  F = ma
• What are the key attributes of force?

  Magnitude and direction
• Mass is a scalar quantity measured in kilograms
• Mass is a scalar quantity.


  True
• What is the first step in solving problems using Newton's Second Law?

  Identify all forces