Class 11 Physics Laws of Motion Introduction


External force is needed to make a stationary body move as well as to stop a moving body.

To understand this chapter i.e. Laws of Motion, lets have a quick recap on what we already know about Motion.

  • Motion in simple is tendency to move. An object is said to be in motion when it changes its position with time
  • A body is said to be at Rest if it is not moving
  • An external force is always involved in motion. This force helps body to perform required actions and these actions are according to rules or laws i.e. Laws of Motion.

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