Newton's Law of Motion

By: Schauntel Niehoff

Newton's 1st Law

  • An object moving at a constant velocity keeps moving at that velocity unless a net force acts on it. (An object at rest stays at rest unless a net force acts on it)
  • An object in motion continues to move in the same direction at the same speed until a force changes its direction.
  • An object in motion will stay in motion until acted by an outside force
  • Example: A soccer ball will not move until it is kicked
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Newton's 2nd Law

  • Acceleration of an object is in the same direction that the net force is applied on the object

  • Force = mass x acceleration

  • The greater the force, the greater the acceleration

  • The mass of an object and the force applied to it affect acceleration

  • Acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by the mass

  • Example: You have to push a heavy ball harder to get it to move as fast as a small ball

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Newton's 3rd Law

  • When an object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction
  • For every action there is an equal and opposite reaction
  • The greater the mass, greater the momentum

  • Action-reaction forces act on different objects and differ from balanced forces

  • Example: A fireman turns on his hose and is knocked backwards

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Videos About the Laws of Motion

Newton's Law Of Inertia
Newton's Second Law of Motion
Newton's 3rd Law of Motion

Real Life Pictures

Newton's First Law

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Newton's Second Law

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Newton's Third Law

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