2.1 Newton's Laws of Motion

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

  Law of Inertia
• Newton's First Law states that an object will remain at rest or continue to move at a constant velocity
• Inertia is the tendency of an object to resist changes in its state of motion.
• Match the condition with its state of motion according to Newton's First Law:

  Rest ↔️ Remains at rest

  Constant Velocity ↔️ Continues moving at constant speed and direction
• What is the mathematical expression for Newton's First Law when an object is at rest or moving with constant velocity?

  $\sum F =$$0$
• A hockey puck sliding on ice will continue in a straight line at constant speed until friction slows it down.
• What is the mathematical expression for Newton's Second Law of Motion?

  $F =$$ma$
• According to Newton's Second Law, force is directly proportional to acceleration
• Heavier objects require more force to achieve the same acceleration as lighter objects.
• What is Newton's Third Law of Motion commonly referred to?

  Action and Reaction
• In Newton's Third Law, action and reaction forces always act on different objects
• When you push a wall, the wall exerts an equal and opposite reaction force on you.
• What is the mathematical expression for Newton's Third Law?

  $F_{AB} =$$- F_{BA}$
• Match the concept from Newton's Second Law with its explanation:

  1️⃣ Force

  2️⃣ A push or pull that causes acceleration

  3️⃣ Mass

  4️⃣ Resistance to acceleration

  5️⃣ Acceleration

  6️⃣ Rate at which velocity changes
• In Newton's Second Law, $m$ represents the mass
• What is the definition of force according to the study material?

  A push or pull
• Mass is the amount of matter an object contains and its resistance to acceleration.
• Acceleration is the rate at which an object changes its velocity
• If a force of 20 N is applied to a5 kg box, what is the acceleration?

  $4 m / s^{2}$
• Newton's Second Law links forces to motion.
• What does Newton's Third Law of Motion state?

  For every action, equal reaction
• In Newton's Third Law, action and reaction forces have equal magnitude
• Action and reaction forces act in the same direction.

  False
• On which objects do action and reaction forces act?

  Different objects
• What is the mathematical representation of Newton's Third Law?

  $F_{AB} =$$- F_{BA}$
• In Newton's Second Law, force is measured in Newtons
• What is the unit of mass in the SI system?

  Kilogram
• Acceleration is measured in meters per second squared.
• A force of 1 N is required to accelerate a 1 kg mass at $1 m / s^{2}$
• What is another name for Newton's First Law of Motion?

  Law of Inertia
• Inertia is the tendency of an object to resist changes in its state of motion
• An object at rest will remain at rest unless a force moves it.
• What happens to an object in motion if no external force acts upon it?

  Continues at constant velocity
• Newton's Second Law of Motion states that force equals mass times acceleration
• According to Newton's Second Law, what is proportional to force?

  Acceleration
• Force and acceleration are vector quantities.
• What does Newton's Third Law of Motion describe about action and reaction forces?

  Equal and opposite
• Match the quantity with its unit:

  Force ↔️ Newton

  Mass ↔️ Kilogram

  Acceleration ↔️ Meters per second squared
• A force of 1 N is required to accelerate a mass of 1 kg at $1 m / s^{2}$
• Which kinematic equation is used to find velocity when acceleration, time, and initial velocity are known?

  $v =$$u +$$at$