s. Calculate the time the force took to produce this change in momentum

  • 1
  • 51 Views
  • All levels

A force of 12 N changes the momentum of a toy car from 3kgm/s t0 10kgm/s. Calculate the time the force took to produce this change in momentum.

Leave an answer

Our People Answers

0

(Based on todays review)

  • Lanuel


    Answer:

    Time = 0.58 seconds

    Explanation:

    Given the following data;

    Initial momentum = 3 kgm/s

    Final momentum = 10 kgm/s

    Force = 12 N

    To find the time required for the change in momentum;

    First of all, we would determine the change in momentum.

     Change \; in \; momentum = final \; momentum - initial \; momentum

     Change \; in \; momentum = 10 - 3

    Change in momentum = 7 kgm/s

    Now, we can find the time required;

    Note: the impulse of an object is equal to the change in momentum experienced by the object.

    Mathematically, impulse (change in momentum) is given by the formula;

     Impulse = force * time

    Making "time" the subject of formula, we have;

     Time = \frac {impulse}{force}

    Substituting into the formula, we have;

     Time = \frac {7}{12}

    Time = 0.58 seconds