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Linear Momentum

Linear momentum of a body is the quantity of motion contained in the body.
  • It is measured in terms of the force required to stop the body in unit time.
  • It is measured as the product of the mass of the body and its velocity, i.e., momentum = mass × velocity.
  • If a body of mass m is moving with velocity 34285.png, then its linear momentum 34279.png is given by 34273.png.
  • Linear momentum is a vector quantity and its direction is the same as the direction of velocity of the body.
  • If two objects of different masses have same momentum, the lighter body possesses greater velocity.
    34267.png = constant
    ∴ 34261.png i.e., 34255.png    [As p is constant]

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