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Physics · May / June 2023 · Paper 11 · Question 10

5054Momentum

A constant frictional force acts on a moving object for a short amount of time causing the momentum of the object to decrease. Which expression is used to calculate the time for which the force acts?

  1. Atime = change in momentum / force
  2. Btime = change in momentum × force
  3. Ctime = momentum / force
  4. Dtime = momentum × force

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Correct answer: A. time = change in momentum / force

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