Newton's Second Law of Motion

Newton's First Law Revision

  • An object remains at rest or in motion with constant velocity unless acted upon by an unbalanced force.
  • Balanced forces (e.g., normal and gravitational force) result in no change in the object's state.
  • Unbalanced forces cause acceleration (speeding up, slowing down, or changing direction).

Newton's Second Law of Motion

  • Acceleration depends on the net force acting on the object and the object's mass.

Force and Acceleration

  • Greater force results in greater acceleration.
  • Acceleration is directly proportional to the net force applied.

Mass and Acceleration

  • Lesser mass results in greater acceleration for the same applied force.
  • Acceleration is inversely proportional to the object's mass.

Formula

  • Fnet=m×aF_{net} = m \times a (Net force equals mass times acceleration).

Unit of Force

  • The unit of force is the Newton (N).