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Check my work on Average Force!

  1. Sep 27, 2012 #1
    A 1,662 kg car goes from 14 m/s to 29 m/s in 19 secs.

    What is the average force acting upon it? Write your answer to two decimal places.



    Attempt:

    Mass = m = 1,662 kg
    Initial Velocity = Vi = 14 m/s
    Final Velocity = Vf = 29 m/s
    Time = t = 19 secs
    Acceleration = a = Δvelocity/time = (Vf - Vi)/t = 15/19 = 0.7894736842105263 m/s2
    Force = F = m x a = 1,662 x 0.7894736842105263 = 1312.105263157895 N


    Answer:

    Average Force = 1312.11 N

    Is the answer correct?
     
  2. jcsd
  3. Sep 27, 2012 #2

    collinsmark

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    Gold Member

    'Looks correct to me. :approve:
     
  4. Sep 27, 2012 #3
    Thank you for your reply!! :smile:
     
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