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Question

How do you calculate the change in momentum of an object?


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Solution

Momentum

  1. Momentum is a vector quantity, the product of velocity and mass of an object is equal to the momentum.
  2. The momentum of an object is defined as the form P=mv, here m and v are the mass and velocity of the object.

Calculation of momentum

  1. From Newton's second law of motion, the time rate of change of momentum is proportional to the applied force, and the direction of momentum is along the force direction.
  2. From Newton's law of motion, FdPdt, where F is the applied force and P is the momentum.
  3. Force on a body is defined as F=ma, where m is the mass and a is the acceleration of the body.
  4. If we know about the applied force then we can easily calculate the change of momentum.

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