3.19 R: Forces and Newton's Laws

Cards (75)

  • Is force a vector or scalar quantity?
    Vector
  • Force has both magnitude and direction.

    True
  • The length of the arrow in a vector diagram represents its magnitude
  • Match the unit of force with its description:
    Newton ↔️ A derived SI unit equal to 1 kg·m/s²
    kg·m/s² ↔️ Force that accelerates a 1 kg mass at 1 m/s²
  • Scalar quantities have both magnitude and direction.
    False
  • Inertia is the tendency of an object to resist changes in its state of motion.

    True
  • In Newton's Second Law, F represents force
  • An external force is required to change an object's state of motion.

    True
  • Newton's Second Law of Motion states that force equals mass times acceleration
  • Acceleration is measured in meters per second squared
  • Scalars only have magnitude and no direction
  • Inertia is the tendency of an object to resist changes in its state of motion
  • Force is measured in Newtons, which is equivalent to kg·m/s².
    True
  • Newton's Third Law states that for every action there is an equal and opposite reaction.

    True
  • What is the key principle of Newton's Third Law of Motion (Action-Reaction)?
    For every action, there is an equal and opposite reaction
  • On which objects do action and reaction forces act?
    Different objects
  • Force is measured in Newtons
  • Vectors are represented using arrow diagrams
  • What is the derived SI unit for force equivalent to 1 kg·m/s²?
    Newton
  • The direction of the arrow in a vector diagram represents the force's direction
  • Newton's First Law is also known as the Law of Inertia
  • The unit for acceleration in Newton's Second Law is m/s².

    True
  • Why is velocity considered a vector quantity?
    It has magnitude and direction
  • What is the mathematical expression for Newton's Second Law?
    F=F =ma ma
  • A 5 kg box is pushed with a force of 10 N. What is its acceleration?
    2 m/s²
  • Match the physical quantity with its type:
    Force ↔️ Vector
    Mass ↔️ Scalar
  • Match the term with its definition:
    Inertia ↔️ Resistance to change in motion
    External Force ↔️ Force that causes motion to change
  • Acceleration is a vector
  • Action and reaction forces have equal magnitude but opposite direction
  • The action and reaction forces have the same magnitude
  • Newton's Third Law states that for every action, there is an equal and opposite reaction
  • Force is a vector quantity that represents a push or pull
  • Scalar quantities have both magnitude and direction.
    False
  • What is force measured in?
    Newtons (N)
  • What two characteristics do vectors have?
    Magnitude and direction
  • Newton's First Law states that an object will remain at rest or in motion unless acted upon by an external force
  • Newton's Second Law states that force equals mass times acceleration
  • What is the formula for Newton's Second Law of Motion?
    F=F =ma ma
  • Acceleration is a vector quantity measured in m/s²
  • Newton's Third Law states that for every action, there is an equal and opposite reaction.
    True